Lot
1880 
Liberia, 1936, 6¢ on 1¢ Green, on Regular Issue Error, wax interleaving as always, very well centered for the issue, strong bright color, Very Fine, a lovely Liberian Airmail rarity with only ten copies discovered; with 1959 P.F. certificate, signed Kessler and accompanied by 1960 letter. Scott No. C3m $750.
Realized: $525