1867-80 3d Rose pl.6 imperforate imprimatur, mint hr, very fine with fresh colour, rare, one of only 22 possible examples, many of which are in institutionalised collections (SG £2'500) (Image)

1867-80 Wmk Spray 3d rose pl.4 mint nh left wing marginal, some gum crazing and minor wrinkling, otherwise fine and fresh example of this scarcer plate (SG £1'850 in 2019)
1867 3d Rose Pl.4 (Wmk. Spray). Very fine unmounted o.g. left hand wing margin example lettered CI. Scarce so fine. (Image)

1867-80 6d (without hyphen) De La Rue die proof printed in black on white matt card (92x 60mm), produced in 1870 by DLR for display at the 1871 London International Exhibition, fine and scarce (Image)

1867-80 6d Mauve pl.9 TE-TF imperforate horizontal corner pair printed on Dr. Perkins blued safety paper, part og, very fine and scarce (SG J77d, £5'600+) (Image)

1867-80 10d Pale red brown mint hr top right corner marginal block of four with "SPECIMEN" type 9 overprint, showing plate number and "POSTAGE 10d" handstamp in blue, tiny tone spot on one stamp, a highly attractive and very rare positional multiple (Image)

1867-80 1s Green AK pl.7 imperforate IMPRIMATUR top marginal with plate number, mint og, very and very rare, unique in private hands with excellent provenance, ex Crawford, Bates, Beaumont & Latto (Image)

1867-80 2s Die proof with void corners and plate numbers printed in brown on white matt card, 92x60mm, produced by De La Rue for display at the 1867 Paris Exhibition, unique in private hands according to "GB Surface Printed Postage Stamps 1855-1883" by Galland and Louis, a magnificent exhibition piece, ex Stothert & Latto
1870 2s Die proof. Very fine and fresh example without corner letters or plate numbers printed in brown on white matt card (92 x 60mm). Produced by DLR for display at the 1867 Paris Exhibition. Robert Galland and Karl Louis record this to be unique in private hands, a stunning example of this very rare proof, a magnificent exhibition piece. Ex Stothert & Latto. (Image)

1867-80 2s De La Rue die proof in black on white glazed card (92x61mm), endorsed "BEFORE HARDENING" and dated "Dec 19, 1872", produced for the proposed 2s stamp with coloured corner letters that was subsequently abandoned, very fine and scarce (Image)

1867-80 2s Blue pl.1. imperforate with "SPECIMEN" type 6 overprint in mint nh top right corner marginal block of four with marginal inscriptions, minor ink smudge on reverse, very fine and fresh, highly attractive multiple (Image)

1867-80 2s Brown pl.1 with SPECIMEN type 9 overprint, mint og, couple of faintly toned perfs at foot not noticeable from the front, very fine and scarce (SG £3'000 in 2019) (Image)

1867-80 2s Brown pl.1. mint og, a very fine and fresh example of this very rare adhesive, cert. BPA (2011) (SG £30'000 in 2019) (Image)

1872-73 6d Chestnut pl.12 ABNORMAL left wing marginal neatly cancelled by a Birmingham "75" duplex, very fine and scarce, cert. RPS (1992) (SG £3'500 in 2019) (Image)