c.1890 De La Rue Die Proof of a large QV Head, in green on thick card, initialled "IP", 82x112mm. Also reprints of the same head proof in pale green (2, shades), lilac or black on gummed paper. A fine group, the proof on card probably an original proof and scarce. (5).

c.1923 Harrison & Sons sample stamps inscribed "SPECIMEN", all perforated, some watermarked, designs comprising Chateau de Chillon in brown and mauve (32) or green and purple (27), St. Nicholas Church, Amsterdam in black and brown (13) or black and green (20), Belgian type (17), Tunisian King (19), Dutch numeral type (14), Rivadavia in green (9), brown or blue (4), Luxembourg type in purple (20) or green (16), Robespiere in blue (21) or orange (17), Javanese girl (18), Queen Wilhelmina in carmine (25) or green (23). A rare large group, many in multiples. (295).

c.1923 Harrison & Sons sample stamp depicting the Chateau de Chillon in brown and mauve, an imperforate proof sheet with large margins on gummed wove paper, endorsed "No. 14", 1084, 114 Spoiled, 1198", possibly unique.

c.1923 Harrison & Sons sample stamps inscribed "SPECIMEN", imperforate stamps on gummed paper, some watermarked, comprising Chateau de Chillon in three differing colours (29, including a block of ten), St. Nicholas Church Amsterdam in four differing colours (38, with blocks of eight and ten), Belgian type in four colours (34, with two sheets of ten), Tunisian King in two colours (9), Dutch numeral type in two colours (7), Luxembourg type in five colours (33, with two sheets of ten), Robespiere in three colours (20), Javanese girl in three colours (11), Rivadavia in blue, Queen Wilhelmina in five colours (12). These perforated sample stamps were illustrated and described in a 1979 article in "The Philatelist", which stated, "some imperfs were also produced, probably as colour trials and proofs, but these are exceedingly rare". A scarce group with thirty differing designs/colours. (207).

c.1923 Harrison & Sons booklet "Collogravure Recess and Surface Printing applied to the Production of Postage and Revenue stamps, Bank Notes and Security Work" containing all fifteen perforated sample stamps in blocks of ten (11) or eight (4), also a document sample, another page with a further block removed, missing the South Africa page (see next lot). A scarce booklet, containing 142 sample stamps.

c.1923 Harrison & Sons booklet "Collogravure Recess and Surface Printing applied to the Production of Postage and Revenue stamps, Bank Notes and Security Work" containing all fifteen perforated stamps in blocks of ten (11) or eight (4), another page also bearing blocks of ten of the South Africa 1d Springbok essays in three differing colours, also a page with a document sample, another page with a further sample block removed. A rare booklet complete with the South Africa essays (which were nearly always removed from the booklet). (142 sample stamps + 30 essays).

c.1930 Perkins, Bacon & Co sample folder, a single page with seven imperforate proofs of 1903-30 postage stamps of Liberia, Bolivia (2) or Colombia (3), or revenue stamps of Salvador (2), all in unissued colours, the folder cover with "Perkins, Bacon & Co Ltd., London S.E.1, Established 1819, Bank Note & Postage Stamp Engravers and Security Printers".