Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3
Lot 1458:
1918, black overprint (type 4) on perforated 1k- 10r, set of 21 stamps, the high value with shifted yellow background to the right, all with full OG, LH or hinged, F/VF, valuable stamps properly expertized, ex-Dr. Zelonka, C.v. $330, Est. $150-$200, Bulat #1149/ 68a
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