Authentic Indian Head/Nickel Button 7/8"
Genuine old nickel coin, made into a shank button in Colorado by longtime respected button and concho makers. Heavy, not a lighter weight replica. This Buffalo nickel or Indian Head nickel is a copper-nickel five-cent piece that was struck by the United States Mint from 1913 to 1938. It was designed by sculptor James Earle Fraser. The wearing of the coin, substantial thickness and heavy weight makes this a beautiful button. Domed, 7/8" diameter, shank back. This button shows the Indian Chief on the front; the buffalo is inside on the back, where you can't see it once the button is sewn on.
This coin was made from Cupronickel, which per Wikipedia is also known as copper-nickel, and is an alloy of copper that contains nickel and strengthening elements, such as iron and manganese. Despite its high copper content, cupronickel is silver in colour.
Due to the specific properties of nickel and copper alloys, they are applied in various domains of industry e.g. coin and medal minting, armaments manufacture, desalination materials, marine engineering, and extensively used in the chemical, petrochemical and electrical industries.
Cupronickel is highly resistant to corrosion in seawater. For this reason, it is used for piping, heat exchangers and condensers in seawater systems, marine hardware, and sometimes for the propellers, crankshafts and hulls of premium tugboats, fishing boats and other working boats.
Another common use of cupronickel is in silver-coloured modern-circulated coins. A typical mix is 75% copper, 25% nickel (a proportion of 3:1), and a trace amount of manganese. In the past, true silver coins were debased with cupronickel.