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
Banknotes of the Hong Kong dollar 10 cents and 1 dollar, and the three banks issuing notes of 5, 10, 50, 100 and 500 dollars. 1-dollar notes were replaced by coins in 1960, with only the 1-cent note issued by the government after 1965. In 1975, the 5-dollar notes were replaced by a coin, whilst 1,000-dollar notes were introduced in 1977. The Mercantile Bank was absorbed by HSBC in 1978 and ceased issuing notes. In 1985, 20-dollar notes were introduced, whilst, in 1993, a 10-dollar coin was introduced and the banks stopped issuing 10-dollar notes. In 1994, the Hong Kong Monetary Authority (HKMA), gave authority to