The 1970 United States Proof Set includes the Lincoln penny, Jefferson nickel, Roosevelt dime, Washington quarter, and the 40% silver Kennedy half dollar. The coins are packaged in a hard plastic airtight package. This is the last year of the silver coins. (2,632,810 minted) Older year Proof Sets may have been previously owned. If you need one of these proof sets in new condition, please call for price and availability.