1936, Pioneers Helping Post, 3k slate blue, perforation 14, printed on porous (so-called "cotton") paper with design is visible on reverse, unfolded block of four, full OG, NH, VF, Est. $200-$250

150.00

1936, Pioneers Helping Post, 3k slate blue, perforation 11, bottom right corner sheet margin block of four printed on porous (so-called "cotton") paper with design is visible on reverse, lower right stamp with a dot between second and third "C" in "CCCP" variety, full OG, NH, VF, Est. $200-$250

150.00

1936, Pioneers Helping Post, 15k brown olive, perforation 14, printed on porous (so-called "cotton") paper with design in deep red is visible on reverse, full OG, NH, VF, Est. $150-$200

100.00