1892, Hippopotamus, perforated sample (essay) of $1 in yellow brown and black, miniature sheet of ten stamps, each one overprinted "Waterlow & Sons Ltd. Specimen", security punch at the bottom left corner, no gum as produced, VF and scarce item, especially in complete pane, Est. $500-$600

250.00

1892, Liberian Star, perforated sample (essay) of $2 in green, miniature sheet of ten stamps, each one overprinted "Waterlow & Sons Ltd. Specimen" with security punch at the bottom left corner, minor perf separation at bottom margin only, no gum as produced, VF, Est. $400-$500

200.00

1928, President King, Palms, Map, 1c-$1, complete sets of postage (11) and officials (8) red Specimen overprints, first one has different types of 1c, 2c, 5c and 15c, second one has two types of 1c, full OG, NH, VF and scarce, C.v. is over $200 for stamps without Specimen overprints, Est. $100-$150

75.00

1953, Birds issue 1c-12c, 16 error perforated or imperforate sheets of 20 or 24 (triangle sheets), separate print of central design or background on front or gum side, erroneously placed perforation, some probably proofs, full OG, NH, VF and interesting group, high re-sale potential, Est. $500-$600

250.00

1956, Melbourne Olympic Games, imperforate stage proofs of postage stamps 4c-10c, and air post 12c and 20c, the total is 13 sheets (two for each value and three for 20c) of 25 stamps each, printed on stamp gummed paper, NH, VF and rare assembly, Est. $400-$500

200.00

1958, President Tubman's Visits to Europe, 5c x3 and 10c, 15c x3, postage and air post, inverted Flag varieties, complete set of seven in bottom right corner sheet margin blocks of four, full OG, NH, VF, Est. $300-$400

150.00

1958, President Tubman's Visits to Europe, 5c x3 and 10c, 15c x3, postage and air post, 6 wrong Flag varieties for each value of the set of 7 in top right corner sheet margin blocks of four, the total is 42 blocks of error stamps, full OG, NH, VF, a common set is included w/o Italy, Est. $300-$400

150.00

1958, President Tubman's Visits to Europe, imperforate 5c x3 and 10c, 15c x3, postage and air post, 6 wrong Flag varieties for each value of the set of 7 in top right corner sheet margin blocks of four, the total is 42 blocks of error stamps, full OG, NH, VF, a common imperforate set is included, Est. $600-$700

300.00

1958, President Tubman's Visits to Europe, imperforate proofs in issued colors without flags, top left corner sheet margin blocks of four, full OG, NH, VF, Est. $300-$400

200.00

1958, President Tubman's visits to Europe, perforated proofs of postage 5c x3 and air post 10c, 15c x3, complete set of seven with design printed on gum side and flags on front, bottom left corner sheet margin blocks of four, full OG, NH, VF, Est. $300-$400

150.00

1958, President Tubman's visits to Europe, imperforate proofs of postage 5c x3 and air post 10c, 15c x3, complete set of seven with design printed on gum side and flags on front, top left corner sheet margin blocks of four, full OG, NH, VF, Est. $300-$400

150.00