Bidspirit auction | Soviet Union - Issues of

Soviet Union - Issues of 1955-1957 - 1956, Ivan M. Sechenov, Russian Physiologist, 40k multicolored, perforation L12 1/2 instead of comb 12x12 1/2, unfolded block of four, full OG NH, VF, a common comb perf block is included, Est. $120-$150, Scott #1826 var