Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 2
Lot 1018:
Description
1914, World War I Charity, smaller format engraved imperforated proof of 10k in dark green, printed on thin cardboard, nice margins around, no gum as produced, VF, expertized by W. Pohl, Est. $400-$500, Scott #B8
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