Two–Mona Lisa Theory
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The two–''Mona Lisa'' theory is a longstanding theory proposed by various historians, art experts, and others that
Leonardo da Vinci Leonardo di ser Piero da Vinci (15 April 1452 - 2 May 1519) was an Italian polymath of the High Renaissance who was active as a painter, draughtsman, engineer, scientist, theorist, sculptor, and architect. While his fame initially rested o ...
painted two versions of the ''
Mona Lisa The ''Mona Lisa'' is a half-length portrait painting by the Italian artist Leonardo da Vinci. Considered an archetypal masterpiece of the Italian Renaissance, it has been described as "the best known, the most visited, the most written about, ...
''.Dianne Hales, ''Mona Lisa: A Life Discovered'' (2014), p. 251.John R. Eyre, '' Monograph on Leonardo da Vinci's Mona Lisa'' (1915).Christian Gálvez, ''Gioconda descodificada: Retrato de la mujer del Renacimiento'' (2019), p. 195, quoting Léon Roger-Milès, ''Leonard de Vinci et les Jocondes'' (1923). Several of these experts have further concluded that examination of historical documents indicates that one version was painted several years before the second. The journalist Dianne Hales has noted that "the two–''Mona Lisa'' theory has been around a long time", observing that the sixteenth-century painter and art theorist
Gian Paolo Lomazzo Gian Paolo Lomazzo (26 April 1538 – 27 January 1592; his first name is sometimes also given as "Giovan" or "Giovanni") was an Italians, Italian artist and writer on art. Praised as a painter, Lomazzo wrote about artistic practice and art t ...
identifies two versions of the painting in his 1584 ''Treatise on Painting''. The theory itself may be impossible to definitively prove or disprove, but proponents of the theory highlight a number of pieces of documentary and physical evidence. Among these is the fact that there are several paintings of which Leonardo is known to have painted two versions, and historical accounts such as Lomazzo's writing suggesting that Leonardo similarly worked on two paintings, a ''Gioconda'' and a ''Mona Lisa''. Furthermore, various accounts contain inconsistencies and incompatibilities with respect to the dates when Leonardo began and ended work on the painting, by whom it was commissioned, the state of completion in which it was left, and what ultimately became of it. These inconsistencies and incompatibilities are asserted to be broadly resolved with the explanation that there were two versions of the painting having different dates of initiation and states of completion, painted for different patrons, and having different profiles and fates. Also cited as a key piece of evidence is a contemporaneous sketch of the painting by
Raphael Raffaello Sanzio da Urbino (; March 28 or April 6, 1483April 6, 1520), now generally known in English as Raphael ( , ), was an Italian painter and architect of the High Renaissance. List of paintings by Raphael, His work is admired for its cl ...
, who observed the painting while visiting Leonardo's studio. The sketch contains characteristics differing from the ''Mona Lisa'' in the
Louvre The Louvre ( ), or the Louvre Museum ( ), is a national art museum in Paris, France, and one of the most famous museums in the world. It is located on the Rive Droite, Right Bank of the Seine in the city's 1st arrondissement of Paris, 1st arron ...
, including prominent columns that were initially argued to have been trimmed from the original. However, in 1993 it was demonstrated that the painting in the Louvre had never been trimmed, bolstering claims that Raphael saw a different version of the painting. Other descriptions by eyewitnesses and others living in the period have also been read as indicating that Leonardo painted two paintings of the subject of the Mona Lisa, with several characteristics differing from the painting in the Louvre. The author John R. Eyre made an extensive case for the theory in his 1915 '' Monograph on Leonardo da Vinci's Mona Lisa'', and Léon Roger-Milès made a similar case in his 1923 book, ''Leonard de Vinci et les Jocondes''. Several more recent examinations of the evidence have led other authors to similar conclusions. While it is possible that a first version was produced by Leonardo and later lost or destroyed, proponents of the theory have identified a number of existing alternative versions of the ''Mona Lisa'' as candidates for having also been painted by Leonardo. These include versions more similar to the original such as the Prado ''Mona Lisa'', but more particularly those versions that closely resemble Raphael's sketch and other historical accounts, such as the Vernon ''Mona Lisa'' (which is no longer considered a candidate after tests showed that it was painted after Leonardo's death), and the Isleworth ''Mona Lisa'', the latter having received the most substantial support.


Evidence cited for the theory


Propensity for painting multiple versions of works

A number of authors have noted that Leonardo often painted two versions of his works, and also often left works unfinished, leaving his students to complete the missing portions. For example,
Frank Zöllner Frank Zöllner (born 26 June 1956) is a German art historian. He is among the leading authorities on the life and works of Leonardo da Vinci, about whom he has written numerous publications. These include book-length studies on the ''Mona Lisa'' ...
wrote of Leonardo's two versions of the ''
Virgin of the Rocks The ''Virgin of the Rocks'' (), sometimes the ''Madonna of the Rocks'', is the name of two paintings by the Italian Renaissance artist Leonardo da Vinci, of the same subject, with a composition which is identical except for several significant de ...
'', and Eyre, in his 1915 monograph, wrote that Leonardo "almost invariably commenced two versions of each of his works, which he rarely finished", citing the ''Virgin of the Rocks'' along with two versions of ''
Saint John the Baptist John the Baptist ( – ) was a Jewish preacher active in the area of the Jordan River in the early first century AD. He is also known as Saint John the Forerunner in Eastern Orthodoxy and Oriental Orthodoxy, John the Immerser in some Baptist ...
'' and of ''
Leda and the Swan Leda and the Swan is a story and subject in art from Greek mythology in which the god Zeus, in the form of a swan, seduces Leda, a Spartan queen. According to later Greek mythology, Leda bore Helen and Polydeuces, children of Zeus, while a ...
'', and two versions each of drawings of
Isabella d'Este Isabella d'Este (19 May 1474 – 13 February 1539) was the Marchioness of Mantua and one of the leading women of the Italian Renaissance as a major cultural and political figure. She was a patron of the arts as well as a leader of fashion ...
, the ''Adoration of the Magi'', and ''Saint Anne''.


References to multiple versions of the ''Mona Lisa''

Dianne Hales quotes the sixteenth-century painter and art theorist
Gian Paolo Lomazzo Gian Paolo Lomazzo (26 April 1538 – 27 January 1592; his first name is sometimes also given as "Giovan" or "Giovanni") was an Italians, Italian artist and writer on art. Praised as a painter, Lomazzo wrote about artistic practice and art t ...
as identifying two versions of the painting: "In 1584, in his ''Treatise on Painting'', the Florentine artist and chronicler Giovanni Paolo Lomazzo, a supposed acquaintance of Leonardo's longtime secretary Melzi, wrote that 'the two most beautiful and important portraits by Leonardo are the ''Mona Lisa'' and the ''Gioconda". Another statement considered as evidence for this purpose was made by Fra Pietro da Novellara in a 1501 letter to Isabella d'Este, Marchesa of Mantua, detailing Leonardo's activities from a visit to his studio. Fra Pietro states in the letter that " o of his pupils are painting portraits, and he touches them up from time to time".E. L. Scott, " Yet Another "Mona Lisa" Adds to Mystery of Louvre Picture", ''Deseret News'' (February 14, 1914), p. 25. Eyre and
Eugène Müntz Eugène Müntz (11 June 1845 – 30 October 1902) was a French art historian who specialized in the Italian Renaissance art. LIfe and career Eugène Müntz was born on 11 June 1845 in Soultz-sous-Forêts, Bas-Rhin. His brother was Achille Münt ...
both discuss Fra Pietro's letter, with Müntz deeming the subjects unknown, and Eyre concluding that these were portraits of
Lisa del Giocondo Lisa del Giocondo (; ; June 15, 1479 – July 14, 1542) was an Italian noblewoman and member of the Gherardini family of Florence and Tuscany. Her name was given to the ''Mona Lisa'', her portrait painting, portrait commissioned by her husban ...
.


Raphael's sketch

A number of experts have argued that Leonardo made two versions based on the differences in details in
Raphael Raffaello Sanzio da Urbino (; March 28 or April 6, 1483April 6, 1520), now generally known in English as Raphael ( , ), was an Italian painter and architect of the High Renaissance. List of paintings by Raphael, His work is admired for its cl ...
's sketch. Circa 1505, Raphael executed a pen-and-ink sketch, in which columns flanking the subject are substantially more apparent. Experts universally agree that this sketch was based on Leonardo's portrait. Other later copies of the ''Mona Lisa'', such as those in the
National Museum of Art, Architecture and Design The National Museum (, officially the National Museum of Art, Architecture and Design) is a museum in Oslo, Norway which holds the Norwegian state's public collection of art, architecture, and design objects. The collection totals over 400,000 w ...
and
The Walters Art Museum The Walters Art Museum is a public art museum located in the Mount Vernon neighborhood of Baltimore, Maryland. Founded and opened in 1934, it holds collections from the mid-19th century that were amassed substantially by major American art an ...
, also display large flanking columns. As a result, it was thought that the ''Mona Lisa'' had been trimmed. However, by 1993,
Frank Zöllner Frank Zöllner (born 26 June 1956) is a German art historian. He is among the leading authorities on the life and works of Leonardo da Vinci, about whom he has written numerous publications. These include book-length studies on the ''Mona Lisa'' ...
observed that the painting surface had never been trimmed; this was confirmed through a series of tests in 2004. In view of this, the art historian Vincent Delieuvin, curator of sixteenth-century Italian painting at the Louvre, states that the sketch and these other copies must have been inspired by another version, while Zöllner states that the sketch may be after another Leonardo portrait of the same subject.


Disparities in dates of production and completion

Disparate dates proposed for the initiation and completion or abandonment of the ''Mona Lisa'' are claimed to indicate that there were actually two different paintings worked on at different times, with one version being begun in 1503 and left unfinished, and the Louvre ''Mona Lisa'' being begun after 1513. Specifically, it is believed by some that Leonardo da Vinci had begun working on a portrait of
Lisa del Giocondo Lisa del Giocondo (; ; June 15, 1479 – July 14, 1542) was an Italian noblewoman and member of the Gherardini family of Florence and Tuscany. Her name was given to the ''Mona Lisa'', her portrait painting, portrait commissioned by her husban ...
, the model of the ''Mona Lisa'', in Florence by October 1503. Although the Louvre states that it was "doubtless painted between 1503 and 1506", Leonardo experts such as
Carlo Pedretti Carlo Pedretti (6 January 1928 – 5 January 2018) was an Italian art historian. In his lifetime, he was considered one of the world's leading experts on the life and works of Leonardo da Vinci. He was a professor of art history and Armand Hamme ...
and
Alessandro Vezzosi Alessandro Vezzosi is an Italian art critic, Leonardo scholar, artist, expert on interdisciplinary studies and creative museology, he is also the author of hundreds of exhibits, publications and conferences, in Italy and abroad (from the United St ...
are of the opinion that the Louvre painting is characteristic of Leonardo's style in the final years of his life, post-1513. Other academics argue that historical documentation indicates that Leonardo would have painted the work in the Louvre from 1513. In 2005, a scholar at
Heidelberg University Heidelberg University, officially the Ruprecht Karl University of Heidelberg (; ), is a public research university in Heidelberg, Baden-Württemberg, Germany. Founded in 1386 on instruction of Pope Urban VI, Heidelberg is Germany's oldest unive ...
discovered a marginal note in a 1477 printing of a volume by the
ancient Roman In modern historiography, ancient Rome is the Roman people, Roman civilisation from the founding of Rome, founding of the Italian city of Rome in the 8th century BC to the Fall of the Western Roman Empire, collapse of the Western Roman Em ...
philosopher
Cicero Marcus Tullius Cicero ( ; ; 3 January 106 BC – 7 December 43 BC) was a Roman statesman, lawyer, scholar, philosopher, orator, writer and Academic skeptic, who tried to uphold optimate principles during the political crises tha ...
. The note was dated October 1503, and was written by Leonardo's contemporary Agostino Vespucci. This note likens Leonardo to the renowned Greek painter
Apelles Apelles of Kos (; ; fl. 4th century BC) was a renowned Painting, painter of ancient Greece. Pliny the Elder, to whom much of modern scholars' knowledge of this artist is owed (''Natural History (Pliny), Naturalis Historia'' 35.36.79–97 and '' ...
, who is mentioned in the text, and states that Leonardo was at that time working on a painting of Lisa del Giocondo. In response, Delieuvin stated "Leonardo da Vinci was painting, in 1503, the portrait of a Florentine lady by the name of Lisa del Giocondo. About this we are now certain. Unfortunately, we cannot be absolutely certain that this portrait of Lisa del Giocondo is the painting of the Louvre". The art historian
Martin Kemp Martin John Kemp (born 10 October 1961) is an English musician and actor, best known as the bassist in the new wave band Spandau Ballet and for his role as Steve Owen in ''EastEnders''. He is the younger brother of Gary Kemp, who is also a ...
, while doubting the two-painting theory, nevertheless notes difficulties in confirming the dates with certainty, and the sixteenth-century biographer
Giorgio Vasari Giorgio Vasari (30 July 1511 – 27 June 1574) was an Italian Renaissance painter, architect, art historian, and biographer who is best known for his work ''Lives of the Most Excellent Painters, Sculptors, and Architects'', considered the ideol ...
wrote of Leonardo's work on the ''Mona Lisa'' that "after he had lingered over it four years, eleft it unfinished", though the painting in the Louvre appears to be a finished piece. Proponents of the theory explain that the hypothetical first portrait, displaying prominent columns, would have been commissioned by Giocondo circa 1503, of a younger sitter (Lisa del Giocondo being 23 years old in 1503), and left unfinished in the possession of Leonardo's pupil and assistant
Salaì Gian Giacomo Caprotti da Oreno, better known as Salaì (1480 – 19 January 1524) was an Italian artist and pupil of Leonardo da Vinci from 1490 to 1518. Salaì entered Leonardo's household at the age of ten. Salai created paintings under the na ...
until Salaì's death in 1524. The second, commissioned by
Giuliano de' Medici Giuliano de' Medici (28 October 1453 – 26 April 1478) was the second son of Piero de' Medici (the Gouty) and Lucrezia Tornabuoni. As co-ruler of the Florentine Republic, with his brother Lorenzo the Magnificent, he complemented his broth ...
circa 1513, would have been sold by Salaì to
Francis I of France Francis I (; ; 12 September 1494 – 31 March 1547) was King of France from 1515 until his death in 1547. He was the son of Charles, Count of Angoulême, and Louise of Savoy. He succeeded his first cousin once removed and father-in-law Louis&nbs ...
in 1518 and is the one in the Louvre today. Notably, even those who believe that there was only one true ''Mona Lisa'' have been unable to agree between the two aforementioned fates, or to otherwise account for the incompatibility of the facts of record with only one painting.


Disparities over the commission

Different sources provide inconsistent information about the identity of the patron for whom the ''Mona Lisa'' was painted. In his 1923 book, ''Leonard de Vinci et les Jocondes'', Léon Roger-Milès argues that Leonardo actually painted at least two versions of the ''
Mona Lisa The ''Mona Lisa'' is a half-length portrait painting by the Italian artist Leonardo da Vinci. Considered an archetypal masterpiece of the Italian Renaissance, it has been described as "the best known, the most visited, the most written about, ...
'', including one for
Francesco del Giocondo Lisa del Giocondo (; ; June 15, 1479 – July 14, 1542) was an Italian noblewoman and member of the Gherardini family of Florence and Tuscany. Her name was given to the ''Mona Lisa'', her portrait painting, portrait commissioned by her husban ...
, and another for
Giuliano de' Medici Giuliano de' Medici (28 October 1453 – 26 April 1478) was the second son of Piero de' Medici (the Gouty) and Lucrezia Tornabuoni. As co-ruler of the Florentine Republic, with his brother Lorenzo the Magnificent, he complemented his broth ...
. According to Vasari, the painting was created for the model's husband, Francesco del Giocondo. However, the record of an October 1517 visit by Louis d'Aragon states that the ''Mona Lisa'' was executed for the deceased Medici, Leonardo's steward at the
Belvedere Palace The Belvedere is a historic building complex in Vienna, Austria consisting of two Baroque palaces (the Upper and Lower Belvedere), the Orangery, and the Palace Stables. The buildings are set in a Baroque park landscape in the third district of t ...
between 1513 and 1516.—though some have suspected this to be an error, hypothesizing that this refers to yet another portrait by Leonardo "of which no record and no copies exist". Scholars have also developed several
alternative views ''Alternative Views'' was one of the longest running public-access television cable TV programs in the United States. Produced in Austin, Texas in 1978, it produced 563 hour-long programs featuring news, interviews and opinion pieces from a progre ...
as to the subject of the painting, with some historically having argued that Lisa del Giocondo was the subject of a different Leonardo portrait, and identifying at least four other paintings as the ''Mona Lisa'' referenced by Vasari. Several other women have been proposed as the subject of the painting in the Louvre. Isabella of Aragon, Cecilia Gallerani,
Costanza d'Avalos, Duchess of Francavilla Costanza d'Avalos (1460–1541), Duchess of Francavilla al Mare, Francavilla, was an Italian ruler. She was the ruler of the Duchy of Francavilla between 1501 and 1541. Life She was the daughter of Innico I d'Avalos, Innico I d'Avalos of ...
,
Isabella d'Este Isabella d'Este (19 May 1474 – 13 February 1539) was the Marchioness of Mantua and one of the leading women of the Italian Renaissance as a major cultural and political figure. She was a patron of the arts as well as a leader of fashion ...
, Pacifica Brandano or Brandino, Isabella Gualanda,
Caterina Sforza Caterina Sforza (1463 – 28 May 1509) was an Italian noblewoman, the Countess of Forlì and Lady of Imola, firstly with her husband Girolamo Riario, and after his death as a regent of her son Ottaviano. The descendant of a dynasty of noted co ...
, Bianca Giovanna Sforza—even feminized versions of Salaì and Leonardo himself—are all among the list of posited models portrayed in the painting. Based on this assertion, it is proposed that Leonardo painted a different painting actually depicting Lisa del Giocondo.


Eyebrows and eyelashes

One previously cited item that appears to have been resolved is the state of the
eyebrow An eyebrow is an area of short hairs above each eye that follows the shape of the lower margin of the Supraorbital ridge, brow ridges of some mammals. In humans, eyebrows serve two main functions: first, human communication, communication thro ...
s or
eyelash An eyelash (also called lash) (Neo-Latin: ''cilium'', plural ''cilia'') is one of the hairs that grows at the edges of the top and bottom eyelids, spanning outwards and away from the eyes. The lashes grow in up to six layers on each of the upper ...
es of the ''Mona Lisa''. Eyre noted that the absence of these features in the Louvre's ''Mona Lisa'' is contrary to Vasari's description of the eyebrows on the painting, that '" ey spring from the flesh, their varying thickness, the manner in which they curve according to the pores of the skin, could not have been rendered in a more natural fashion". Some researchers accounted for this disparity by asserting that the subject never had eyebrows, and that it was common at this time for genteel women to pluck these hairs, as they were considered unsightly. In 2007, however, the French engineer Pascal Cotte announced that his ultra–high resolution scans of the painting provide evidence that the ''Mona Lisa'' was originally painted with eyelashes and with visible eyebrows, but that these had gradually disappeared over time, perhaps as a result of overcleaning. Vasari also described red lips, of which Cotte was unable to find traces in the Louvre painting. Cotte discovered that the painting in the Louvre had been reworked several times, with changes made to the size of the sitter's face and the direction of her gaze. He also found that in one layer the subject was depicted wearing numerous hairpins and a headdress adorned with pearls which was later scrubbed out and overpainted.


Other versions

It is possible that a first version of the ''Mona Lisa'' was produced and then lost or destroyed. However, a number of existing paintings have been identified as possibly being this first version. The most widely endorsed contender is the Isleworth ''Mona Lisa'', which had been examined by a number of experts in the 1910s and 1920s, and was later hidden in a Swiss bank vault for 40 years before being unveiled to the public on September 27, 2012. The
Swiss Federal Institute of Technology in Zurich ETH Zurich (; ) is a public university in Zurich, Switzerland. Founded in 1854 with the stated mission to educate engineers and scientists, the university focuses primarily on science, technology, engineering, and mathematics. ETH Zurich ran ...
has dated the piece to Leonardo's lifetime, and an expert in
sacred geometry Sacred geometry ascribes symbolic and sacred meanings to certain geometric shapes and certain geometric proportions. It is associated with the belief of a divine creator of the universal geometer. The geometry used in the design and constructi ...
has found it to conform to the artist's basic line structures. It also has columns similar to those in the sketch made by Raphael, and the red lips described by Vasari. In 1988, the physicist John F. Asmus, who pioneered laser-restoration techniques for Renaissance art, and who had previously examined the ''Mona Lisa'' in the Louvre for this purpose, published a computer image processing study concluding that the brush strokes of the face in the Isleworth ''Mona Lisa'' were performed by the same artist responsible for the brushstrokes of the face of the ''Mona Lisa'' in the Louvre.John F. Asmus, "Computer Studies of the Isleworth and Louvre Mona Lisas", in T. Russell Hsing and Andrew G. Tescher, ''Selected Papers on Visual Communication: Technology and Applications'' (SPIE Optical Engineering Press, 1990), pp. 652-656; reprinted from ''Optical Engineering'', Vol. 28(7) (July 1989), pp. 800-804. By the 1970s,
Peregrine Cust, 6th Baron Brownlow Peregrine Francis Adelbert Cust, 6th Baron Brownlow (27 April 1899 – 28 July 1978), often known as Perry Brownlow, was a British peer and courtier. He was the son of Adelbert Salusbury Cockayne Cust, 5th Baron Brownlow, and his wife Maud B ...
, also came into possession of a painting which he believed to be another version of the ''Mona Lisa'', and to also have been painted by Leonardo.Chris Pritchard, "France said 'non'–so Britain finds another Mona Lisa", ''The Sydney Morning Herald'' (October 22, 1972), p. 62. Brownlow and Henry F. Pulitzer, owner of the ''
Isleworth Mona Lisa The ''Isleworth Mona Lisa'' is an early 16th-century oil on canvas painting depicting the same subject as Leonardo da Vinci's ''Mona Lisa'', though with the subject (Lisa del Giocondo) depicted as being a younger age. The painting is thought to ...
'' at that time, genially disputed who had the "real" ''Mona Lisa'' in the press, and both offered to show their respective ''Mona Lisa'' paintings at a London exhibition in 1972."The World", ''
The New York Times ''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
'' (October 22, 1972), p. E-4.
Raymond R. Coffey, "Does Mona Lisa Know", ''
Charleston Daily Mail The ''Charleston Daily Mail'' was a newspaper based in Charleston, West Virginia. On July 20, 2015, it merged with the '' Charleston Gazette'' to form the '' Charleston Gazette-Mail''. Publishing history The ''Daily Mail'' was founded in 1914 ...
'' (October 17, 1972), p. 9A, via the ''Chicago Daily News''.
Another claimed version is in the
Vernon collection Robert Vernon (1774–1849) was an English contractor and businessman, known as a patron of art. Life Vernon was a self-made man, a jobmaster, posting contractor, and dealer in horses in London in a large way. He amassed a fortune as contractor ...
. The Vernon ''Mona Lisa'', however, dates from around 1616, though it also has columns, and was itself originally part of the collection at the Louvre. It was given to
Joshua Reynolds Sir Joshua Reynolds (16 July 1723 – 23 February 1792) was an English painter who specialised in portraits. The art critic John Russell (art critic), John Russell called him one of the major European painters of the 18th century, while Lucy P ...
by the
Duke of Leeds Duke of Leeds was a title in the Peerage of England. It was created in 1694 for the prominent statesman Thomas Osborne, 1st Marquess of Carmarthen, who had been one of the Immortal Seven in the Revolution of 1688. He had already succeeded ...
around 1790, in exchange for a Reynolds self-portrait. This version was included in an 1824 "Account of the Principal Pictures belonging to the Nobility and Gentry of England", which lists "The Mona Lisa sitting on a Chair" as a painting by "Lionardo da Vinci"; it was then owned by Sir Abraham Hume. The account describes the background as "a Landscape with a Bridge", and states that " is not known how this portrait was brought to England"."Works on the Fine Arts", ''Somerset House Gazette and Literary Museum'', No. XLII (London, July 24, 1824)
p. 242
Reynolds thought it to be the real painting and the French one a copy, which was later deemed to have been disproved. It is, however, useful in that it was copied when the original's colors were far brighter than they are now, and so it gives some sense of the original's appearance "as new". It remains in a private collection, but was exhibited in 2006 at the
Dulwich Picture Gallery Dulwich Picture Gallery is an art gallery in Dulwich, south London. It opened to the public in 1817 and was designed by the Regency architect Sir John Soane. His design was recognized for its innovative and influential method of illumination f ...
. In 2012 the
Museo del Prado The Museo del Prado ( ; ), officially known as Museo Nacional del Prado, is the main Spanish national art museum, located in central Madrid. It houses collections of Art of Europe, European art, dating from the 12th century to the early 20th ce ...
in
Madrid Madrid ( ; ) is the capital and List of largest cities in Spain, most populous municipality of Spain. It has almost 3.5 million inhabitants and a Madrid metropolitan area, metropolitan area population of approximately 7 million. It i ...
announced that it had discovered and almost fully restored a copy of the painting by a pupil of Leonardo, very possibly painted alongside the master. The copy gives a better indication of what the portrait looked like at the time, as the
varnish Varnish is a clear Transparency (optics), transparent hard protective coating or film. It is not to be confused with wood stain. It usually has a yellowish shade due to the manufacturing process and materials used, but it may also be pigmente ...
on the original has become cracked and yellowed with age. The German imaging researchers Claus-Christian Carbon of the
University of Bamberg The University of Bamberg () in Bamberg, Germany, specializes in the humanities, cultural studies, social sciences, economics, and applied computer science. Campus The university is partly housed in historical buildings in Bamberg's Old Town. ...
and Vera Hesslinger of the
University of Mainz The Johannes Gutenberg University Mainz () is a public research university in Mainz, Rhineland Palatinate, Germany. It has been named after the printer Johannes Gutenberg since 1946. it had approximately 32,000 students enrolled in around 100 a ...
performed further analysis of the Prado version, comparing it to Leonardo's ''Mona Lisa'', and in 2014 speculated that, based on perspective analysis of key features in the images, the two images were painted at the same time from slightly different viewpoints. They further proposed that two images may therefore form a
stereoscopic Stereoscopy, also called stereoscopics or stereo imaging, is a technique for creating or enhancing the illusion of depth in an image by means of stereopsis for binocular vision. The word ''stereoscopy'' derives . Any stereoscopic image is ...
pair, creating the illusion of
three-dimensional In geometry, a three-dimensional space (3D space, 3-space or, rarely, tri-dimensional space) is a mathematical space in which three values (''coordinates'') are required to determine the position (geometry), position of a point (geometry), poi ...
depth, when viewed side-by-side. However, a study published in 2017 has demonstrated that this stereoscopic pair in fact gives no reliable stereoscopic depth. Professor Salvatore Lorusso, who has written several papers and articles comparing these paintings and others, including the ''Mona Lisa with Columns'' in Saint Petersburg, and the Oslo ''Mona Lisa'', supported the Isleworth ''Mona Lisa'' as one of two original versions by Leonardo, while concluding that the Prado ''Mona Lisa'' is likely to have been by one of Leonardo's more talented students, and that the Vernon ''Mona Lisa'' was a copy done section-by-section, "probably painted by a French court artist in
Fontainebleau Fontainebleau ( , , ) is a Communes of France, commune in the Functional area (France), metropolitan area of Paris, France. It is located south-southeast of the Kilometre zero#France, centre of Paris. Fontainebleau is a Subprefectures in Franc ...
or a visiting artist at the beginning of the 17th century".


See also

* ''Mona Lisa'' man theories * Speculations about ''Mona Lisa''


Notes


References


Bibliography

* {{DEFAULTSORT:Two-Mona Lisa theory Mona Lisa