This 1966 SMS set comes in its original box and includes 5 coins minted in San Francisco. The set contains a 40% silver Kennedy half dollar, as well as other coins in uncirculated condition. The strike type is special mint set and the coinage type is also special mint set. The fineness of the silver is .40. The mintage for this set is 2,261,583 and it is uncertified. The composition is silver and the precious metal content is 0.15oz. The grade is ungraded and the years minted are 1965-1967. This is a great addition to any coin collection!