Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2
Lot 1016:
Description
1921, double black handstamped surcharge 20k on imperforate 3.50r maroon and green, full OG, VLH, VF and exceedingly rare, only a handful known, expertized by Romeko, this rarity is not listed either in Scott or Russika Cat., Est. $1,200-$1,500 , Scott #71 var
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