The Penny Red was used in the UK for many years (1841-1879), and comes in hundreds of variations which are subject to detailed study by philatelists.
Zeppelin mail from Gibraltar to Rio de Janeiro, Brazil via Berlin on the Christmas flight (12th South American flight) of 1934

Philately (/fɪˈlætəl/; fi-LAT-ə-lee) is the study of postage stamps and postal history. It also refers to the collection, appreciation and research activities on stamps and other philatelic products. Philately involves more than just stamp collecting or the study of postage; it is possible to be a philatelist without owning any stamps.[1] For instance, the stamps being studied may be very rare or reside only in museums.

  1. ^ Carlton, R. Scott. The International Encyclopaedic Dictionary of Philately, Iola WI: Krause Publications, 1997, p.196. ISBN 0-87341-448-9.