1892 400th Anniversary of the Discovery of America by Columbus, specialised collection of the 2c and 5c Santa Maria, Nina & Pinta, with individual proofs...

1923-37, Group of Bradbury Wilkinson photographic essays from their archive, with 10 stamp-size photographs in sepia on glossy paper of essays created...

1916 Tierra del Fuego reprint in mint n.h. complete sheet of 100 (10 x 10), a small piece of margin missing at top left otherwise fine, the printers details...

1905ca. Group of Bradbury Wilkinson photographic essays from their archive on two pieces, with 10 stamp-size photographs in sepia on glossy paper of essays...

1902ca. Bradbury Wilkinson photographic essays from their archive, two designs on one photographic piece of glossy paper affixed to card of unissued designs...

1867 American Bank Note Co. 20c Columbus black die proof, printed in black on sunken card, number 323, pencil number at base, very fine condition.

1870ca. American Bank Note Co. sunken proof with Columbus' head and engine turned background, some slight ageing, a scarce proof.

1870ca. American Bank Note Co. sunken proof of the Columbus 1c deep green, numbered 25275, slightly cut down at left and attached to backing card by hinge.

1872 De La Rue Die Proof of 5c Columbus head for unissued 5c postal stationery card, in black on glazed card, dated 'May 28, 1872, with design superbly...

1872 De La Rue undenominated Die Proof of Columbus head for postal stationery card, without value in black on glazed card, dated 'May 2, 1872 and BEFORE...

1877-83 Columbus issue group, with set of imperf proofs on thin paper unused, issued rouletted set hinged mint and with 1c bottom right corner marginal...

1881 Columbus group of specimen and proof blocks of four with 1c marginal, inscriptional block with punch holes overprinted SPECIMEN in red, similar 2c...

1898ca. American Bank Note Co. ledger page with imperf proof stamps of 1867-68 Columbus issue, with the 5c in unissued brown shade and the 20c red, 1877...

1893 Five stationery envelopes, two 5c and 10c Servicio Postal Fluvial and a 5c Servicio Postal Ferreo unused; good to fine condition

1863 Medio Real American Banknote group of four imperf. proofs on thick card with one in deep blue, green (colour of the 4r) and orange, plus a further...

1863 Un Peso American Banknote imperf proofs on thick card with one in black and the other brown, each proof shows black or brown line in top left and...

1892 Coat of Arms Waterlow issue, 1c value in unissued claret in a sheetlet of nine, each stamp overprinted "WATERLOW & SONS LTD / SPECIMEN" with small...

1892 Coat of Arms Waterlow issue, the set of ten imperf proofs in unissued colours on thin wove paper, all in blocks of four unused, a fine and rare set;...

1961-70, Group of Bradbury Wilkinson photographic essays from their archive, with 12 stamp-size photographs in sepia on glossy paper of essays created...

1867 Medio real black on rose on wove paper, three examples with good to large margins, one a corner marginal, fine and fresh unused, each signed G Todd...

1879 Medio Real blue on white essay in complete sheet of 21, the bottom left stamp shows a solid circle of blue, the third stamp a partial strike, large...

1879 Medio Real black on yellow essay in complete sheet of 21, the bottom left stamp shows a solid circle of black, the third stamp a partial strike, unused...

1879 Medio Real black on purple essay in complete sheet of 21, the bottom left stamp shows a solid circle of black, the third stamp a partial strike, mint...

1880 Coat of Arms issue imperf. proofs in composite blocks of ten with nine different values in green, red, blue and brown-purple, unused without gum,...

1895 1c. black, values in each corner, single die proof on thick, ungummed chalky paper, fine, scarce

1895 5c. black, values in each corner, single die proof on thick, ungummed chalky paper, fine, scarce

1895 Coat of Arms set of four in imperf blocks of twelve, 1c green from bottom left corner without gum, 2c mint with one hinge, 5c left-hand marginal with...

1881-82 unadopted essay by the American Bank Note co., measuring 88 x 145mm on thin card, the central vignette of the Ecuadorian Arms inscribed 'Para Los...

1881 American Bank Note Co. engraved die proof for the 10c Eagle in black on off white thin card, measuring 48x110mm, very fine.

1896 American Banknote Co. composite proof of the 2c and 5c on India paper, in deep blue, a small tone between stamps not unduly detracting.

1896 Hamilton Banknote Company composite Die Proof on sunken card with 1s and 50c engraved in deep blue

1896 Hamilton Banknote Company composite Die Proof on sunken card with 1c, 10c, 20c and 5s engraved in blue with file number '1002' at base. A rare item.

1899-1900 Fiscal issue in composite sheetlet of nine showing two examples of 1c and 2c and five other values, all overprinted "WATERLOW & SONS LTD / SPECIMEN"...

1871 lithographed plate proof for 1c value within a grey circle on white wove paper, by Joubert of Paris who used seven different colours as trial colour...

1871 Reprinted proofs in black by the Royal Philatelic Society after the original plates had been donated, all four values in horizontal marginal pairs...

1871 5c deep brown on buff in imperf bottom right corner block of fifteen (5 x 3) imperf, small flaws on first stamps in 2nd and 3rd row consisting of...

1871 5c bistre-brown in mint block of four containing one tête-bêche pair, position 103, small scuff on bottom right stamp otherwise very fine.

1871 10c imperf proof in milky blue, a horizontal pair, good margins all around, taken from the second horizontal row of the composite proof sheets of...

1871 10c blue, types I and II, in bottom right imperf corner block of sixteen (4 x 4) from a rejected sheet showing 'O' for '0' in value tablets of penultimate...

1871 Coat of Arms 1c blue imperf. proof, good to close margins, horizontal crease with slight rubbing, unused without gum, a scarce proof not mentioned...

1871 10c blue perforated block of 80, the first eight rows of sheet, all type I with wide '0', without gum as usual, some perf. reinforcements and toning,...

1871 1c ochre on buff in unused block of forty consisting of two blocks of 20 (10 x 2) with interpanneau gutter, imper, guide crosses at the bottom centre...

1871 1c ochre group of multiples with perforated blocks of 16 and 20 in different shades mint n.h., imperf unused block of 21 (3 x 7) from top of sheet...

1871 20c rose in mint block of eight (4 x 2) with fresh colour, light bottom right corner bend, part separation at base between second and third stamp,...

1871 20c blue instead of rose, perforated Error of Colour, slight vertical crease and small adhesion on reverse, in a fine deep shade, signed Saatchi;...

1890 Pyramid imperf undenominated black proof on thin paper and a horizontal pair, similar but with Centavos either side of lower value tablet, a good...

1905 definitive issue set of large format sunken die proofs by the American Banknote Co., in issued colours from 1c. green to 5p violet, the 5c large size,...

1907 Waterlow & Sons Limited, Londres engraved master die proof in black with blank Duty Plates, adhered to small piece of card, file number '3812' at...

1881, die proofs including engraved duty frame proofs of the 1c, 2c and 4c in black, engraved composite die proof of the 1c, 2c and 4c without shading...

1866 25s and 50s imperf proofs on ABN file cards, centre imperf colour proof pairs of 50s blue and black, imperf 50s orange and blue with another overprinted...