Bidspirit auction | Soviet Union - Stamps and

Soviet Union - Stamps and Postal History - 1932, M.O.P.R. (The International Organization for Aid to Revolutionary Fighters (IOPR), 50k deep red, block of four, printed on paper with vertical watermark Borders and Rosettes, full OG, NH, VF, C.v. $270++, Est. $200-$250 , Scott #479