Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 2018:
1924, 2nd Soviet issue, black surcharge 75k on War Charity 10+1k dark blue and brown, perforation 12½, se-tenant block of four, different types of surcharge, full OG, NH, VF, Standard Cat. #PE11A, Est. $500-$600
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