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
Australian one dollar coin Australian one dollar coin The Australian one dollar coin is the second-most-valuable circulation denomination coin of the Australian dollar after the two-dollar coin; there are also non-circulating legal-tender coins of higher denominations (five-, ten-, two-hundred-dollar coins and the one-million-dollar coin). It was first issued on 14 May 1984 to replace the one-dollar note which was then in circulation, although plans to introduce a dollar coin had existed since the mid-1970s. The first year of minting saw 186.3 million of the coins produced at the Royal Australian Mint in Canberra. Three portraits of Queen Elizabeth II have featured on the obverse,