Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2
Lot 634:
1894, Harp Seal, 5c bright blue, top sheet margin horizontal pair with BABN imprint, nice centering, full OG, VLH, VF, C.v. $150, Unitrade C.v. CAD$200, Est. $90-$120 , Sc. #55
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