Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 954:
1913, Alexander III, two unfinished design proofs of center for 3k postcard stamp in carmine, printed on yellowish thin cardboard, first one with unfinished portrait and rough oval line, the other one with unclear portrait and unfinished line of outer oval, approximate size 38×43- 44mm, fresh and VF, ex-Norman Epstein, Est. $600-$800
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