1841 1d Red brown Pl.11 (Trial on Dickinson silk thread paper). Unused four margin imperforate example printed on Dickinson silk thread paper lettered EJ. SG16,. Spec. DP22. Cat £4750. (Image)

1840 1d Rainbow trial (State 1). Very fine close to large four margin example, printed in black on thin white wove paper. Spec. DP20A. Cat. £10000 (Image)

1840 1d Rainbow trial (State 2). Very fine four margin bottom right hand corner marginal example printed in lilac-rose on white wove paper dipper in prussiate of potash. Some vertical creasing in sheet margin and small white spot on Queen’s neck. Spec. DP20B(a) Cat. £2000 (Image)

1840 1d Rainbow trial (State 2). Fine example, just touched at lower right printed in deep red-brown on thin white wove paper. Spec. DP20B(c) Cat. £2000 (Image)

1840 1d Rainbow trial (State 3). Very fine four margin top left hand corner marginal example printed in dark olive-green on thick bluish laid paper. Spec. DP20C(d) Cat. £2500 (Image)

1840 1d Rainbow trial (State 3). Very fine four margin example printed in deep blue on white wove paper showing a strong ivory head on reverse. Spec. DP20C(b) Cat. £2250 (Image)

1865 1d Black Pl.66 ‘Royal reprint’ (Wmk. inverted). Superb unused large part o.g. four margin imperforate block of four lettered GF-HG. A very scarce multiple. Cat. £10,000. Spec. DP35a (Image)

1841 Small Trial Two Pence Plate in blue, 2d with blank letter squares with excellent colour. SG Spec. DP43. Cat £1500. (Image)

1841 2d Small Trial Two Pence in blue, horizontal pair with blank letter squares. Small toning at top of left hand stamp. Spec. DP43. Cat £3000. (Image)

1850 1d 'Prince Consort' essay. Unused o.g. imperforate four margin example printed in brown, lettered FJ. Scarce. Spec. DP71(2). Cat £2000. (Image)

1850 1d 'Prince Consort' essay. Unused o.g. imperforate four margin example printed in black, lettered FJ. Scarce. Spec. DP71(2). Cat £3000. (Image)