Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 3
Lot 1481:
1919, black surcharge ”sha hiv” with two bars at top over black ”Porto” and ”50” on 42h brown, omitted ”Pen” variety of surcharge (position 17), postally used, VF, only a handful such stamps was produced, this omitted ”Pen” surcharge variety is definitely unique, several experts’ hs on reverse, Z. Mikulski certificate is conforming that the stamp is unique, C.v. $9,000 for a stamp w/o variety, Mi #28, €22,500++, Scott #67 var
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