One-base-unit coins

British gold coin

euro coin with a value of one euro

smallest denomination of the Japanese yen currency

British coin, denomination of the pound sterling

silver coin of the Russian Empire

Japanese currency

current denomination of Australian currency

The loonie (), formally the Canadian one-dollar coin, is a gold-coloured Canadian coin introduced in 1987 to replace the Canadian one-dollar bill and the previous silver Voyageur dollar. It is produced by the Royal Canadian Mint at its facility in Winnipeg. The most prevalent versions of the coin show a common loon, a bird found throughout most of Canada, on the reverse and Queen Elizabeth II, the nation's head of state at the time of the coin's issue, on the obverse. Various commemorative and specimen-set editions of the coin with special designs replacing the loon on the reverse have been mi

coin of Siam