Liberia, 1892, 1¢//32¢ Officials, Additional "O.S." Overprints. The complete set of 8 values, o.g., some with usual brownish gum, strong colors, 16¢ with faint tone spot in top margin, still F.-V.F., rare with only one sheet of each printed (von Saleski #O1a-O3a, O5a-O9a). Scott No. O1-O3, O5-O9 vars.  Estimate $200 - 300. $0 (Image)