Spesmilo
Speso (from French " espèce " (money places ) ) was the project of a currency unit that was used Esperanto circles as unit of account. The currency was designed in 1907 by René de Saussure to facilitate communication in the ( multinational ) Esperanto community and was used up until the First World War on a small scale by British and Swiss banks. A similar concept was from 1945 to 1993 the Stelo.
Units
The currency was based on the decimal system, which is normally not the Speso, but the Spesmilo (1000 Speso, Symbol: Sm) is taken as the starting value:
1 Spesmilo = 10 Spescentoj = 100 = 1000 Spesdekoj Spesoj
Value
Had 1 Spesmilo the equivalent of 0,733 grams of gold, 1/2 dollars, or 2.50 francs a ruble.
Spesmilo characters
The Spesmilo character, a monogram of a large S and small M, was mainly used as a logo. In running text of Spesmilo is shortened to just "Sm ". It is included in the Unicode standard as a currency sign.
Ĉekbanko Esperantista
Hoveler Herbert (1859-1918), a German banker and esperantist, who had emigrated to London, was the most important promoter of the idea of Speso. In order to enforce the currency he founded in 1907 Ĉekbanko Esperantista. The bank issued checks on Speso out the " unu lingvo Unu Mondo, unu mono" with the motto ( one world, one language, one currency " ) were printed. Altogether 730 bank customers were counted in 43 countries. With the death Hovelers 1918 also ended the currency.