Uncirculated Coins are packaged into Mint Sets, each coins is encased in its own cellophane wrapping and includes the issue year's cent, nickel, dime, quarter, half, and dollar. These sets are intended for collectors, not for circulation, however the coins inside are the same composition as circulated coins. The Denver Branch of the US Mint issued Silver Uncirculated Kennedy Half Dollar coins in 1968,1969,1970 & 1976. Silver Uncirculated Eisenhower Dollars (Ikes) were issued in 1971, 1972, 1973, 1974 & 1976.