Bi-metallic coin dated 2006 (minted at Noida). Since 1996, Canada has also produced bi-metallic $2 coins (nicknamed "toonies"). Great Britain has issued a bi-metallic 2-pound coin since 1997; and Singapore has issued a bi-metallic 1-dollar coin since 2013. The first ever tri-metallic circulating coins were 20-francs coins introduced in France and Monaco in 1992. These were similar to the corresponding bi-metallic 10-francs coins, but had two rings instead of one. As well as circulating coins, where they are generally restricted to high-denomination coins, bi-metallic coins are often used in commemorative issues, often made of precious metals. For example, the only bi-metallic coin
Canadian dollar after the then Prime Minister, John Diefenbaker. This peg lasted until 1970, after which the currency's value has floated. Canadian English, like American English, used the slang term "buck" for a former paper dollar. The Canadian origin of this term derives from a coin struck by the Hudson's Bay Company during the 17th century with a value equal to the pelt of a male beaver – a "buck". Because of the appearance of the common loon on the back of the $1 coin that replaced the dollar bill in 1987, the word "loonie" was adopted in Canadian parlance to distinguish