Bidspirit auction | Soviet Union - Stamps and

Soviet Union - Stamps and Postal History - 1924-25, definitive issue, soldier 3r black brown and green, perforated (L13½) bottom sheet margin block of four, bottom sheet margin imperforate single and trial color imperf proof in pale brown and rose, all with invalidating perforation, the last one in addition with red handstamp ''ZABRAKOVANO'' (Rejected), full OG, NH, VF, block with I. Kirzhner certificate, Est. $400-$450, Scott #292, imp