1938, 20k deep green, a single with comb perforation 12 1/2x12 instead of L12 1/2, nicely centered, full OG with minimal yellowing at a few tiny places, NH, VF and rare, Raritan Stamps guarantee, Est. $2,500-$3,000 (Image)

1938, 20k deep green, enlarged margins imperforated single, apparently stamp from the top right corner, full OG, light trace of hinge mark, VF and rare, Raritan Stamps guarantee, Est. $2,000-$3,000 (Image)