The 1982 & 1983 United States Proof Sets are highly sought after coin sets that feature coins with a copper composition, minted in San Francisco. These sets include coins of various denominations such as 1 cent, 5 cents, 10 cents, 25 cents, and 50 cents, all in proof strike type. Certified by the U.S. Mint, these sets represent a valuable addition to any coin collection, showcasing the craftsmanship and quality of American coinage from the early 1980s.