This is a rare and highly sought-after 1975 S Proof Set, consisting of 5 sets of mixed proof set coins. The set is factory sealed and unopened, making it a perfect addition to any coin collector’s collection. The coins were minted in San Francisco, United States, and were struck in proof quality. The set includes a variety of coins from different denominations, making it a great addition to any collection. The coins are uncirculated and uncertified, adding to their uniqueness and character. This is a must-have item for any serious coin collector, and it is sure to appreciate in value over time.