William J Kozersky, Philatelist
William J Kozersky, Philatelist
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U.S. CHRISTMAS SEALS
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Essays & Proofs
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Die Proofs
Die Proofs
53-NMp4, 1953 U.S. Christmas Seal Die Proof
54-NMp3, 1954 U.S. Christmas Seal Die Proof
55-NMp2x2, 1955 U.S. Christmas Seal Die Proof