Bidspirit auction | (2) 1971-1973, (3) 1974, 1975
(2) 1971-1973, (3) 1974, 1975 US PROOF SETS - WEEKLY COIN & CURRENCY AUCTIONS ESTIMATE $110 - $160.
(2) 1971-1973, (3) 1974, 1975 US PROOF SETS - WEEKLY COIN & CURRENCY AUCTIONS ESTIMATE $110 - $160.