Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 1308:
1918, black overprint (type 35) on perforated 20k blue and carmine, full OG, LH, VF, expertized by J. Bulat, priced with ”-” in the Cat., Est. $150-$200, Bulat #1913
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