A U.S. Mint set is a complete collection of one of each coin produced by all U.S. Mints in a given year. Mint sets have been offered every year since 1947, except 1950, 1982, and 1983. All U.S. coins in a Mint set are uncirculated, although they are not struck on special, polished dies like coins in a proof set. But Mint sets do have their charms, especially the ones from the late 1940s through the mid-1960s, when sets were sent to customers...Continue Reading