5 lats coin Bank of Latvia has issued two collector coins featuring the imagery of the 5 lats coin. The first was struck in 2003 as part of the international series "The Smallest Gold Coins of the World". The second was struck in 2012 to commemorate the 90th anniversary of the bank. The Bank of Latvia worked with the British Royal Mint, which minted the original coins, to recreate the coin using electrotypes used in minting the original coins. In 2004, after a nationwide idea contest, the design was selected for the national side of Latvian Euro coins, and approved as a design
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