Davissons Ltd.
Auction 42 1 Mar 2023
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UNITED STATES. Ayer's-backed encased postage stamp. 24 mm. John Gault manufactured case; Patent Aug 12, 1862. US one cent blue, Franklin / AYER'S SARSAPARILLA TO PURIFY THE BLOOD in four lines. HB 028. Near Extremely Fine; almost full silvering on back.