This 1979 US Mint Set includes 12 uncirculated coins in various denominations ranging from 1 cent to 50 cents, minted in Philadelphia, Denver, and San Francisco. The coins are composed of copper alloy and copper-nickel, and have a business strike type. This set is a product of the US Mint and has not been modified in any way. It is a great addition to any coin collection and a perfect gift for any numismatist.