This special 3 coin set was produced by the US government to commemorate the U.S. bicentennial year 1776- 1976. All three of these “S” mint mark coins contain Bicentennial reverse designs. (Bicentennial quarter, half dollar, and Eisenhower silver dollar.) Made at the United States government San Francisco mint and each contains the “S” mintmark. You won’t find these in circulation because each is made of 40% silver. Coins are just as they came from the mint (uncirculated) and may show typical mint bag marks. These are Mint sealed in flexible plastic and in the original bright red mint envelope.