1952. "Superbird" FS-901. PCGS graded Proof 67 Cameo. Has what looks like an S mintmark on the eagle's breast, hence the Superman connotation. How scarce is the "Superbird?" Only 81,980 Proof 1952 sets were issued. If one assumes that the "Superbird" variety represents a single reverse die, which appears to be the case, then perhaps 15,000 to 20,000 strikes may have been made using this die according to David Lange. Pop 23; 2 finer, 1 in 67+, 1 in 68. (PCGS # 144444) . Estimated Value $600 - 650. Categories: Washington Quarter Dollars
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