Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 1119:
Description
1911, two stamps with black surcharges 1k over violet ”3” (k) on 1k orange and on 6k brown violet, full OG, previously hinged, VF, Schmidt rank ”R” for each stamp, C.v. 1,200, Est. $800-$900 , Schmidt #31-32
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