The dalasi is the currency of the Gambia that was adopted in 1971. It is subdivided into 100 bututs. It replaced the Gambian pound at a rate of 1 pound = 5 dalasis, i.e. 1 dalasi = 0.2 pound = 4 shillings. The derivative of dala is unknown. In numerous languages in the Francophonie, currency terms (including batut, dalasi, doromi, teemer) refer to the former 5 French West African franc note (the lowest denomination at the time), but to which the origins are not known. One speculated origin is a pronunciation of "dollar"; however, variants of dalasi in other Mandinka dialects (such as daasi) counter this speculation while butut is from Wolof butuut, "small thing". As a result of inflation, now bututs coins have completely disappeared from circulation and the minimum monetary unit has become 1 dalasi. Coins See also; Coins of the Gambian dalasi In 1971, coins in denominations of 1, 5, 10, 25 and 50 bututs and 1 dalasi were introduced. The 1 and 5 bututs were struck in bronze while the 10 bututs were brass and the 25, 50 bututs and 1 dalasi were cupro-nickel. The reverse designs of the three higher denominations were taken from the corresponding denominations of the previous currency (1, 2 and 4 shillings), with the reverse designs for the lower three coins coming from the 6, 1 and 3 pence coins, respectively. All coins of this series depict former president, Sir Dawda Jawara. Rounding methods for the butut were described in an article published in the 1986 issue of the recreational mathematical journal Eureka, in connection with Gambian mathematical education and its relation to counting coins; individual bututs were described as having no commercial significance, while other coins were colloquially referred to using old British nomenclature. New 1 dalasi coins were introduced in 1987, modeled on the 50 pence coin of the United Kingdom. These replaced the larger, round dalasi coins which never saw its widespread use as the lower denominations. In 1998, a new coin series was introduced, in which the effigy of Dawda Jawara was dropped and replaced with the national coat of arms on the obverses. However, older Jawara era coins still commonly circulate as legal tender. The 1 dalasi coin was also downsized in size and weight, but none of the other coins were changed. Only 25 and 50 bututs and 1 dalasi coins are currently in circulation,