A Second interesting coin fact is, what are coins made of?

Source: Ningbo Heng Yuan Wang Plastic Co., Ltd.  author:   Time: 2013-09-04

     Well in 1792, the United States Mint required that all coins minted would be made of copper, silver, or gold. This was the standard for over a hundred years, and in 1965 Congress decided to stop using silver in Dimes and Quarters, and reduced the amount of silver used in dollars and half dollars as well. Well that was the past, what about today's coins, what are they made of. Nickels, Dimes, Quarters, and Half Dollars are made of copper and nickel of different percentages. The Golden Dollar (Sacagawea) was made of copper, nickel, zinc, and manganese.