The term formular (often misspelled formula) is an adjective applied to envelopes, cards and

aerogram An aerogram, aerogramme, aérogramme, air letter or airletter is a thin lightweight piece of foldable and gummed paper for writing a letter for transit via airmail, in which the letter and envelope are one and the same. Most postal administration ...

s, etc., produced by postal authorities or to their specification, but bearing no imprinted or embossed stamp or other indication of prepayment of postage. Formular stationery requires an adhesive stamp before posting.Van Gelder, Peter J.; ''The Collectors' Guide to Postal Stationery'', A Squirrel Publication, Shrewsbury, UK (1997) Because they lack an indication of prepayment of postage or other related service, they do not technically meet the definition of "

postal stationery A piece of postal stationery is a stationery item, such as a stamped envelope, letter sheet, postal card, lettercard, aerogram or Newspaper wrapper, wrapper, with an imprinted stamp or inscription indicating that a specific rate of postage ...

", but the due to the similarities they are sometimes included in postal stationery collections.Is it postal stationery?
Federation Internationale de Philatelie. Retrieved 12 May 2011. Countries including

New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...

Zimbabwe file:Zimbabwe, relief map.jpg, upright=1.22, Zimbabwe, relief map Zimbabwe, officially the Republic of Zimbabwe, is a landlocked country in Southeast Africa, between the Zambezi and Limpopo Rivers, bordered by South Africa to the south, Bots ...

and

Ireland Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...

have printed unstamped aerograms.

References

External links

Formular Postal Stationery of Luxembourg
Postal stationery Philatelic terminology Envelopes {{Philately-stub