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- For general information on the characteristics of metals and their uses in coins, consult either the Britannica (registration needed) or the free Britannica Intermediate. You can also check out other Encyclopedias selected for our library.
Do a sub search for metal, metallurgy, alloy, and minting coin. You'll find general information of the history, science, and technological applications of many aspects of metallurgy that may be useful in the design and production of a new coin.
- Metals Used in Coins and Medals by Tony Clayton. Lists the 28 metals and 31 alloys used in coin production around the world. A short description of each metal and alloy includes some basic characteristics such as color, density, melting point, and corrosion resistance. For each metal and alloy, the description also includes the name and denomination of the coin and the country and years in which the material was used to produce it.
- The United States Mint contains a "wealth" of information on coin specifications and coin production. The specifications include the metallic composition of each U. S. coin along with its weight, diameter, thickness, and type of edge. For a very instructive portion of the site dealing with the design and production of the new golden dollar, click on "Mint Program" and the "Golden Dollar Coin".
- The Manufacturing Process for United States Coins is a site within the U. S. Department of Treasury that describes the manufacturing process for U. S. coins. The site distinguishes among homogenous, plated, and clad coins. It also contains many frequently asked questions dealing with the Department of Treasury.
- How a Coin Tester Works Although the top page contains a spelling error and was created by a college student, this page gives a well-documented description, as well as a diagram, of how a coin tester works.
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