William J Kozersky, Philatelist
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U.S. CHRISTMAS SEALS
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Essays & Proofs
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Imperforate Proofs
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Collections
Collections
1929-69 Imperforate U.S. Christmas Seals, As Required Collection
1970-80 U.S. Christmas Seals, As Required Imperforate Proof Collection
1981-87 U.S. Christmas Seals, As Required Imperforate Proof Collection
