1867-80 Large Uncoloured Corner Letters, Wmk Spray of Rose. 1870 3d die proof in mauve on white matt card, 60x90mm, produced by De La Rue for the 1870 International exhibition; very rare with only one or two examples of each colour in private hands. (Image)

1870 3d die proof printed in rose on white matt card, 38x38mm, produced by De La Rue for the 1870 International Exhibition, very fine and extremely rare, only one or two examples exist in each colour in private hands. (Image)

1873 3d rose pl.10 BL imperforate imprimatur, mint o.g., very fine and rare, one of only 22 possible examples many of which are in institutional collections. (Image)

1867-80 6d mauve pl. 8 IK-JL mint block four from the foot of the sheet showing part inscription "POSTAGE", lovely bright colour, a superb and rare block. (Image)

1867-80 wmk Spray 9d straw wmk Spray with superb Neath cds, very fine (S.G. £325). (Image)

1873 9d die proof (type B) in orange yellow on white glazed card 90x60mm produced by De La Rue for the proposed but subsequently abandoned issue with coloured corner letters; very rare with one or two examples in each colour in private hands. (Image)

1872 10d die proof in black on white glazed card, 90x60mm, vertical format with corner letters and plate numbers void, stamped "BEFORE HARDENING" and dated Dec 12, 1872 in black, produced by De La Rue for a proposed issue with coloured corner letters, the die was never used as the 10d value was withdrawn, very scarce. (Image)

1867 10d red brown pl.1 JA-JC mint horizontal strip of three, large part o.g., corner crease at the lower left of JA not detracting from the very fine appearance of this magnificent multiple (S.G. £10'800 as singles). (Image)

1872 2s die proof in black on white glazed card, 90x60mm, vertical format with corner letters and plate numbers void, stamped "BEFORE HARDENING" and dated Dec 19, 1872 in black; produced by De La Rue for a proposed issue with coloured corner letters, the die was never used as the 2s value was withdrawn, very scarce. (Image)