The 1 euro coin is bi-metallic: the inner part of cupronickel, the outer part of nickel brass

Bi-metallic coins are coins consisting of more than one metal or alloy, generally arranged with an outer ring around a contrasting center. Cupronickel or Coppernickel is an Alloy of Copper, Nickel and strengthening impurities such as Iron and Manganese. Brass is any Alloy of Copper and Zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties main - title Coin keywords numismatics coin review The M acro E xpansion T emplate A ttribute L anguage complements TAL, providing macros which allow the reuse of code across An alloy is a Solid solution or Homogeneous mixture of two or more elements, at least one of which is a Metal, which itself has Common circulating examples include the €1, €2, British £2, Canadian $2 and South African R5. 1 Euro coins (€1 or 1€ are made of two Alloys the inner part of Cupronickel, the outer part of nickel Brass. See also €2 commemorative coins 2 Euro coins (€2 are made of an inner Coin and an outer ring Toonie (sometimes spelled Twonie or Twoonie) is the name of the two- dollar Coin, a combination of the number "two" with the name The rand ( sign: R; code: ZAR) is the Currency of South Africa.

Bi-metallic coins have been issued for a long time, with examples known dating from the 1600s. The silver-center cent pattern produced by the United States in 1792 is another example. The silver center cent is an American Pattern coin, one of the precursors to the large cent and an early example of a Bimetallic coin. A pattern coin is a Coin produced for the purpose of evaluating a proposed coin design but which was not approved for general circulation The United States of America —commonly referred to as the In recent times, the first circulating bi-metallic coin was probably the 500 Italian lire, first issued in 1982. The lira (plural lire) was the Currency of Italy between 1861 and 2002 France, with a 10 franc coin and Thailand, with a 10 baht, issued bi-metallic coins for circulation in 1988. The franc (represented by the franc sign ₣ or more commonly just F) is a former Currency of France.

As well as circulating coins, where they are generally restricted to high denomination coins, bi-metallic coins are often used in commemorative issues, they are used as a way of securing against Coin counterfeiting. Commemorative coins are coins that were issued to commemorate some particular event or issue Coin counterfeiting occurs regularly in the antique Coin market but there are various modern forgeries that make it into general circulation

The manufacturing process is similar to that of ordinary coins, except that two blanks (the inner and the outer) are struck at the same time, deforming the separate blanks sufficiently to hold them together.

External links

• www.wbcc-online.com Bi-metallic coin collectors' website
• A History of Bi-metallic Coins