Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 1296:
1918, black overprint (type 15) on perforated 2k-50k, including pairs of 10k and 20k, two stamps of 50k, the total is 14 values, all are postally used, F/VF and rare group, C.v. $870 and stamp of 14k priced with ”-”, Est. $400-$500, Bulat #1591/64
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