Record-Breaking 1975 No S Proof Dime Quickly Re-Sold For $516,000
September 16, 2019 – The most valuable United States modern coin ever sold at auction, a 1975 proof No S dime, changed hands twice in less than a week, both times for record prices. The finer of the two known 1975 proof dimes without the San Francisco S mint mark was jointly purchased on September 6, 2019 for $456,000 by modern coin specialist Mitch Spivack along with his son, Justin, owner of MonsterCoinMart (www.MonsterCoinMart.com) in Orange County …