FIRST DAY COVERS: 1952-54 Tudor Crown watermark set of seventeen used on six day of issue illustrated envelopes. Very Fine. SG 515/31 (Image)

1955 Waterlow Castles set of 4 on individual printed envelopes, 2s6d, 5s, (23 SP/55) 10s and £1 (1 SP/55) each tied by Colne, Lancs. cds on the first day of issue (4) SG 536/539 £1,500 (Image)

1963 2½d carmine-red (Wmk. Crowns Sideways, Type I whiter paper), lower marginal pair, imperforate imprimatur, from the sideways coil, with a "BPMA" h/s on reverse, fine o.g., very scarce. SG 574a var (Image)

1963 Bradbury Wilkinson £1 black printing on chalk-surfaced paper, prepared for used but not issued. A fresh and fine unmounted og example of this rare unissued stamp. RPS Certificate (1991). SG 598a var, Spec T24b (Image)

1961 European Postal & Telecommunications Conference (C.E.P.T) 10d vertical strip of four with third stamp showing ERROR PALE GREEN OMITTED with two adjacent stamps showing partial omissions, a stunning error from the late Queen's reign, very rare, Pierron records only six mint examples, an exhibition piece. SG 628a. Ex Sir Gawaine Baillie (Lot 1059) (Image)

1961 European Postal & Telecommunications Conference (C.E.P.T) 10d showing ERROR TURQUOISE OMITTED, full unmounted o.g., very fine and rare, offered with normal for comparison. Brandon Certificate (2005) SG 628a (Image)

1961 Seventh Commonwealth Parliamentary Conference, 6d left marginal vertical pair with top stamp showing ERROR GOLD OMITTED, full unmounted o.g., very fine and rare. SG 629a Ex Sir Gawaine Baillie (Lot 1060) (Image)

1964 20th International Geographical Congress 4d block of four showing ERROR VIOLET (FACE VALUE) OMITTED, full unmounted o.g., fine and scarce. SG 652a. Ex Sir Gawaine Baillie (Lot 1067) (Image)

1965 Centenary of Joseph Lister 4d, showing ERROR INDIGO OMITTED, full unmounted o.g., very rare. SG 667b. Ex Sir Gawaine Baillie (Lot 1070) (Image)

1966 4d-1s6d British Technology (ordinary paper). Very fine unmounted o.g. imperforate set of imprimaturs with N.P.M handstamp on reverse. Very rare, only 10 sets released. (Image)

1966 Battle of Hastings 1/3d (phosphor) right marginal block of four showing ERROR LILAC OMITTED, full unmounted o.g., a rare multiple, offered with normal single for comparison. SG 712pa. Ex Sir Gawaine Baillie (Lot 1079) (Image)

1967 E.F.T.A. 9d Sea Freight, top right marginal block of six, all showing ERROR BLACK (QUEEN'S HEAD), BROWN, NEW BLUE & YELLOW OMITTED, full unmounted o.g., a superb and rare piece. SG 715b. Ex Sir Gawaine Baillie (Lot 1081) (Image)

1967 Christmas 3d block of four showing ERROR GOLD (FACE VALUE & QUEEN'S HEAD) OMITTED, full unmounted o.g., very fine, offered with normal block for comparison. SG 756a (Image)

1968 British Paintings 1/9d Constables 'Hay Wain', left marginal showing ERROR RED OMITTED, full unmounted o.g., a fine and rare error. SG 774b. Ex Sir Gawaine Baillie (Lot 1094) (Image)

1969 British Ships 5d 'R.M.S Queen Elizabeth 2', lower marginal vertical pair showing ERROR BLACK (QUEEN'S HEAD, VALUE, HULL & INSCRIPTION) OMITTED, full unmounted o.g., a very desirable example of this rare and spectacular error. SG 778a. Ex Sir Gawaine Baillie (Lot 1095) (Image)

1969 5d British Ships. Very fine unmounted o.g. bottom right hand corner marginal traffic light block of six with red (Cunard inscription and traffic light) & phosphor omitted. Scarce. (Image)

1969 British Ships 9d left marginal strip of three with Elizabethan Galleon showing ERROR RED & BLUE OMITTED, full unmounted o.g., fine and rare. SG 779ab. Ex Sir Gawaine Baillie (Lot 1096) (Image)

1970 5d British Rural Architecture. Very fine used example with greenish blue (door) omitted, neatly tied to a small piece by a light cds. Rare. Pierron record only circa two used examples. 1998 Brandon Cert. (Image)

1971 5p Literary Anniversaries. Superb unmounted o.g. example with gold (Queen's head) omitted. Offered with a normal for comparison. Pierron records only 36 mint examples. (Image)

1971 5p Literary Anniversaries. Very fine unmounted o.g. example with gold (Queen's head), offered with a normal for comparison. 2014 BPA Cert. (Image)

1971 3p Anniversaries. Very fine unmounted o.g. example with deep blue omitted (Sailor's uniform), offered with normal for comparison. (Image)

1973 British Explorers 3p ''David Livingstone & Henry Stanley'' se-tenant pair showing error light orange-brown omitted, fine unmounted o.g., offered with normal for comparison. SG 923ad (Image)

1974 3½p Fire Prevention Act. Superb unmounted o.g. imperforate horizontal pair. Scarce variety, Pierron records 50 mint pairs. (Image)

1980 10p Christmas. Very fine unmounted o.g. top marginal imperforate pair. Scarce, pierron records only ten mint pairs. (Image)

1973 3p ultramarine (one centre band), right marginal block of four, showing variety IMERFORATE HORIZONTALLY, full unmounted o.g., very fine and scarce. SG X856c (Image)