Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 3
Lot 1519:
1918, black overprints (type 23) on perforated 3k-3.50r, including 20k/14k priced with ”-” in the Catalog, full OG, mainly LH, VF, properly expertized, Bulat #1758/69, Est. $150-$200
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