Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3
Lot 1067:
1913, Tercentenary of the Romanov Dynasty, Michael Fyodorovich, imperforated large die proof of 70k in emerald, printed on chalk-surfaced paper, size 40x48mm, traces of hinges and minor paper scratch on reverse, still fresh and F/VF, Est. $750-$1,000 , Sc. #100
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