Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2
Lot 808:
1904, double red surcharge ”Express Delivery. (Inland)” on Arms stamp in gray green with no value indicated, full OG, LH, fine and scarce, BPA certificate, C.v. $800, SG #E6b, £750, Est. $400-$500 , Sc. #E4a
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