1937, 10k-1r, five complete sets of six (3), five or three, line perforation 12 1/2, 14x12 1/2, 11x12 1/2 and 14 (chalk-surfaced paper), comb perforation 12 1/2x12 (ordinary paper), all with full OG, NH, mainly VF and very scarce assemblage, Est. $500-$650 (Image)