History of Aviation, Rare Stamps and Postal History of the World, Part 1
Lot 252:
1995, Alice Hamilton, MD, 55c green on prephosphored paper, left sheet margin (USPS inscription) horizontal transition strip of eight, two stamps at left are imperforated, full OG, NH, VF and scarce, only 20 pairs known, this item priced with -‘- in the Cat., Est. $400-$500, Sc. #2940, a
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