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
Cook Islands dollar demonetized. In 1987, a smaller, lighter scallop-edged $1 coin with a similar size and shape to the Hong Kong $2 piece. This coin was issued to replace its bulky predecessor. Along with the new dollar, a triangular $2 coin and a dodecagonal (twelve-sided) $5 piece in equal size and shape to the Australian 50-cents coin were introduced, with the new $1 and $2 composed of cupro-nickel and the $5 coin in aluminium bronze. 2003 saw the reintroduction of a 1-cent coin, this time composed of aluminium rather than bronze and slightly smaller and thicker than the 10-cents piece. These were