Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 879:
1913, Nicholas II, apparently final design proof of 5r in reddish brown, complete engraved hatching, including thickened corners of ”5 roubles” and engraving at the bottom of the oval, printed on wove paper, size 63x71mm,marked in pencil with ”15.” at top right, no gum as produced, VF and very rare, Est. $2,000-$2,500, Scott #14
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