Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3
Lot 1470:
1918, black overprint (type 5) on imperforated 3k red, horizontal imperforated pair with Kamenets ”19.11.18” ds, mostly VF, expertized by J Bulat, C.v. $330++, Est. $150-$200 , Bulat #1485
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