Uncirculated sets sold by the US Mint from 1947 to 1958 contained two examples of each regular issue coin. These were packaged in cardboard holders that did not have a protective seal over the coins. Since 1959 the sets have been sealed in a protective plastic envelope. No official US Mint sets were issued in 1950, 1982 and 1983. This 1952 set contains Philadelphia, Denver and San Francicso minted coins of the Lincoln Cent, Jefferson Nickel, Roosevelt Dime, Washington Quarter, and Franklin Half Dollar (two of each) in cardboard holders.
