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
Dollar coin (United States) Lincoln Cents in collector popularity. The coin is named after George T. Morgan, its designer. Morgan dollars were minted at Philadelphia (no mint mark), New Orleans ("O" mint mark), San Francisco ("S" mint mark), Carson City ("CC" mint mark), and (in 1921 only) Denver ("D" mint mark). The mint mark is found on the reverse below the wreath, above the "O" in "DOLLAR". Introduced in December 1921 and having the same ratio of silver-to-copper as the Morgan dollar, the Peace dollar, designed by medalist Anthony de Francisci, was promulgated to commemorate the signing of formal peace treaties between the Allied