Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 3
Lot 1415:
Description
1918, black overprint (type 44) on two perforated stamps of 25k green and violet, one has double overprint, postally used, mostly VF, expertized by J. Bulat, both values are priced with ”-” in the Cat., Bulat #2010, a
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