Pair of 1975 United States Proof Sets, each containing six coins packaged by the U.S. Mint. These sets feature the iconic Bicentennial designs for the Washington Quarter, Kennedy Half Dollar, and Eisenhower Dollar, all dual-dated 1776-1976. The collection also includes the Lincoln Penny, Jefferson Nickel, and Roosevelt Dime, each dated 1975. Housed in their original black plastic display cases with red felt inserts and protective outer envelopes, these sets showcase the high-luster mirror finish characteristic of San Francisco Mint proof strikes. A perfect addition for collectors of American numismatic history and Bicentennial memorabilia.