Bidspirit auction | Soviet Union stamps of 1923-32
Soviet Union stamps of 1923-32 - 1925, Academy of Sciences, 3k orange brown, perforation L12½, left sheet margin unfolded block of four, full OG, NH, VF , Sc. #326
Soviet Union stamps of 1923-32 - 1925, Academy of Sciences, 3k orange brown, perforation L12½, left sheet margin unfolded block of four, full OG, NH, VF , Sc. #326