Lot 2902 P
Liberia, 1954 UN Technical Assistance Issue, progressive deluxe proof sheet, on unglazed soft "experimental" paper (280x216mm), 20 sheets showing impression of all four values, with 12¢ missing black and 25¢ missing red second colors, without gum, very scarce.Scott No. C78-C81P var. Estimate $300 - 400.