Bidspirit auction | Soviet Union Collection of Sheets

Soviet Union Collection of Sheets and Large Blocks - 1938, Ascent of the Balloon, 80k brown, complete sheet of 50 (10x5) and block of 50 originated from a sheet of 100, first one with minor creases, both have some separations, still full OG, NH, F/VF, ''miniature'' sheet is rather scarce, SC. V. 175,000P as singles, Sc. #685