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William J Kozersky, Philatelist Philatelist and dealer in collectible Charity Seals, Charity Seal Literature, Stamp Collecting Supplies, Stamp Albums, and Album pages. Plus, Stamp Packets, Postcards, USPS Souvenir Pages, and Collectible Labels.
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| U.S. Christmas Seal Essays & Proofs: U.S. Christmas Seal Proofs are trial impressions of the accepted design, while Essays are trial proofs which are different from the accepted design. These proofs may differ in color, perforation, sheet format, paper, etc. from the issued seal. Within this category are Essays, Negative Maker's Proofs, Single Die Proofs, Imperforates, and Progressive Color Proofs (PCPs). All are identified with catalog numbers from the Green's Catalog. We have identified and cataloged the following Christmas Seal proofs: |
