Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2
Lot 628:
1865, Harp Seals, British American Banknote Co. large die proof of central vignette (not approved design), printed on card, size 71x61mm, no gum as produced, VF and rare, Est. $400-$500 , Sc. #25
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