1892, Hippopotamus, perforated proof of $1 in yellow brown and black, miniature sheet of ten stamps, each stamp overprinted "Waterlow & Sons Ltd. Specimen", security punch at the bottom left corner, no gum as produced, VF

500.00

1903, Liberty, four perforated proof panes of 3c, colors: blue, orange brown, green and gray blue, no gum as produced, VF and rare assembly

1903, Liberty, three die proofs of 3c, colors: dark brown, green and violet, printed on india paper with thickened borders, approximate size 75x90mm, no gum as issued, VF

750.00

1915-16, Gunboat, two stamps, black proof surcharge 2ct on 5c ultra and black, and an issued stamp with the similar surcharge in red, fresh, full OG, previously hinged, F/VF, C.v. $280 for issued stamps

300.00

1942, Wild Animals, 1c-5c, set of five the American Banknote Company die proofs in issued colors, printed on pieces with marginal security punches, approximate size 86x65mm, mounted on Archival ABN's sunken cards with typewritten inscription on the edges, fresh, VF and probably unique assembly

1936, Palm Tree, surcharged issue, complete set of three used on addressed First Day Cover, cancelled "Monrovia. 18.11.1936", stamp perforation soiling, still VF and scarce, C.v. $525 for used stamps off cover

400.00

1936, Waco Plane, 2c carmine and black, 3c violet and black, two tete-beche pairs imperforated between stamps, full OG, previously hinged, VF

100.00

1938, Birds and Sikorsky Amphibian, imperforated proofs in issued colors, set of ten in pairs, less 20c, but with extra 4c in yellow, each stamp is overprinted "Proof" in black, full OG, NH, VF and colorful assembly

300.00

1903, President Gibson, three imperforated trial color proofs 10c of complete design, inscribed "Monrovia", centers are in black and frames - in blue, red and green; in addition three plate proofs of center in black on various paper, fresh, no gum as issued, VF

200.00

1919, S.S. "Quail", imperforated proofs in issued colors, complete set of five in tete-beche pairs, full OG (1) or no gum as issued, VF

250.00