This 1990-S U.S. Mint Proof Set is a must-have for any coin collector. The set includes proof coins of 1C, 5C, 10C, 25C, and 50C denominations, struck in San Francisco. The coins are made of copper-plated zinc and copper-nickel, and come with a certification from the U.S. Mint. The set is uncirculated and ungraded, making it a great addition to any collection.

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