5 lats coin and freedom. The coin was designed by Rihards Zariņš. The image of the maiden on the coin is colloquially known as Milda (a Latvian female name). The model was Zelma Brauere (1900-1977), a proofreader of the State Securities Printing House. She served as a model for other works of the artist, including the 10 lats and 20 lats banknotes and the 50 santīmi coin. In 1939, the Latvian government prepared to mint new 5 lats coins to be issued in 1941. The Latvian maiden was to be replaced by a portrait of the authoritarian leader of Latvia, Kārlis Ulmanis. Those
Currency mostly paper, but Australia's Commonwealth Scientific and Industrial Research Organisation developed the world's first polymer currency in the 1980s that went into circulation on the nation's bicentenary in 1988. Now used in some 22 countries (over 40 if counting commemorative issues), polymer currency dramatically improves the life span of banknotes and prevents counterfeiting. Currency use is based on the concept of lex monetae; that a sovereign state decides which currency it shall use. Currently, the International Organization for Standardization has introduced a three-letter system of codes (ISO 4217) to define currency (as opposed to simple names or currency signs), in