Lot 2894 P
Liberia, 1954 UN Technical Assistance Issue, trial colors, imperf on stamp paper, 38 different in upper panes of ten with top imprint; includes 12¢ (two color combinations), 15¢ (12 color combinations), 20¢ (12 color combinations) and 25¢ (12 color combinations), o.g., never hinged, a very rare trial color set.Scott No. C78-C81TC Estimate $600 - 800.