Should you experience any issues i. This 1964 US Mint Set includes 10 uncirculated coins. The Kennedy’s Washington’s and Roosevelt’s are 90% silver while the Jefferson and Lincoln are obviously Copper. The set contains coins in denominations of 1C, 5C, 10C, 25C, and 50C, all struck in business condition at the Philadelphia and Denver mints. The coins are housed in their original government packaging and come with a certification from the U. This set is a great addition to any coin collection and a perfect gift for coin enthusiasts.