Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 3

Russian Offices in the Turkish Empire

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Start price: $100

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1909 (December 1), black ”Constantinople” overprint on R.O.P.i T. Jubilee issue 5pa/1k-70pi/7r, complete set of nine (stamp with blue overprint was issued in 1910), used on registered cover from Constantinople to Berlin, paper seal on reverse, VF, Est. $150-$200, Sc. # 61-69