1966 Birds 4d mint n.h. se-tenant block of four (phosphor) with bistre omitted, very fine, post office fresh, a rare variety (S.G. £4'000+).

1966 Battle of Hastings 1s3d phosphor with error lilac omitted in mint n.h. lower marginal, very fine (S.G. £975).

1967 Christmas, Paintings 3d mint n.h. strip of four with progress omission of the gold print resulting in the left hand stamp with gold (value only) omitted...

1970 Literary Anniversaries 5d se-tenant imperforate block of four, mint o.g. (hinged at top), very fine variety (S.G. £1'200).

1968 De La Rue "Captain Cook" phosphor trials set of eight dummy stamps, mint n.h., showing Captain Cook's portrait in four different colours in two slightly...

1968 Christmas Toys 4d mint n.h. with vermilion omitted variety, very fine, incl. normal for comparison (S.G. £450).

1969 Ships 5d Queen Elizbeth II mint n.h. block of four misperfed vertically resulting in the two upper stamps without inscription of the ship name, very...

1969 Ships 9d mint n.h. se-tenant strip of three with the first stamp showing error red, blue and phosphor omitted in top left corner marginal strip showing...

1969 Concorde 4d with error violet (value etc.) omitted, neatly used, very fine (S.G. unpriced used).

1969 Concorde 4d with error yellow-orange and phosphor omitted, mint n.h., very fine (S.G. Concise 2025 £450).

1969 Cathedrals 5d top left corner marginal block of 18, with the first column showing the missing "d" variety, mint n.h., very fine and fresh (S.G. Spec....

1969 Cathedrals 1s6d mint n.h. with black (value) omitted variety, some faint yellowing on the gum, very fine and scarce; cert. Brandon (2019) (S.G. £1'200).

1969 Christmas 1s6d group of three modern errors, incl. deep slate (value etc.) omitted, gold omitted and new blue omitted, plus normal for comparison,...

1971-80, Harrison's photogravure giant Machin head and background proof group of proofs incl. 1) 203x254mm proof in ultramarine on OCP paper, used for...

1971 Harrison & Son colour trials, 8d in ultramarine, the adopted colour for the 3p (normal stamp included) on OCP/PVA paper, mint h.r., pencil "K" on...

1971 Harrison & Son colour trials, 8d in blue, unadopted colour on OCP/PVA paper, mint h.r., pencil "K" and "5" on reverse, very fine, very rare, thought...

1971 Harrison & Son colour trials, 8d in greenish blue, unadopted colour, on OCP/PVA paper, mint h.r., pencil "T" annotation on reverse, very fine, very...

1971 Harrison & Son colour trials, 8d in dull greenish blue, adopted colour for the 4p (normal stamp included), on OCP/PVA paper, mint h.r., no pencil...

1971 Harrison & Son colour trials, 8d in plum, adopted colour for the 29p and 34p (normal stamps included), on OCP/PVA paper, mint h.r., pencil "27 G"...

1971 Harrison & Son colour trials, 8d in deep bright mauve, adopted colour for the 37p and 39p (normal stamps included), on OCP/PVA paper, mint h.r., pencil...

1971 Harrison & Son colour trials, 8d in maroon, on OCP/PVA paper, mint h.r., pencil "30" annotation on reverse, very fine, very rare, the only example...

1971 Harrison & Son colour trials, 8d in deep bright magenta, similar to the adopted colour for the 3p (normal stamp included), on OCP/PVA paper, mint...

1971 Harrison & Son colour trials, 1s in mauve, adopted for the 25p and 31p (normal stamps included), on OCP/PVA paper, mint h.r., pencil "3" annotation...

1971 Harrison & Son colour trials, 1s in pale chestnut, adopted colour for the 7 1/2p (normal stamp included), on OCP/PVA paper, mint h.r., pencil "U"...

1971 Harrison & Son colour trials, 1s in dull olive grey, unadopted colour, on OCP/PVA paper, mint h.r., pencil "Y" annotation on reverse, very fine, very...

1971 Harrison & Son colour trials, 1s in pale light emerald, adopted colour for the 12 1/2p (normal stamp included), on OCP/PVA paper, mint h.r., pencil...

1971 Harrison & Son colour trials, 1s in pale olive green, unadopted colour, on OCP/PVA paper, mint h.r., pencil "X" annotation on reverse, very fine,...

1971 Harrison & Son colour trials, 1s in slate blue, unadopted colour, on OCP/PVA paper, mint h.r., pencil "J" annotation on reverse, very fine, very rare,...

1971 Harrison & Son colour trials, 1s in light violet blue, unadopted colour, on OCP/PVA paper, mint h.r., pencil "I" annotation on reverse, very fine,...

1971 Harrison & Son colour trials, 1s6d in deep ultramarine and pale bright blue, unadopted colour, on OCP/PVA paper, mint h.r., pencil "22" annotation...

1971 Harrison & Son colour trials, 1s6d in deep carmine and pale magenta, unadopted colour, on OCP/PVA paper, mint h.r., pencil "C" annotation on reverse,...

1971 Harrison & Son colour trials, 1s6d in deep blue-green and rose-pink, unadopted colour, on OCP/PVA paper, mint h.r., pencil "22" annotation on reverse,...

1973 British Explorers 3p se-tenant pair with light orange-brown omitted, mint n.h., very fine, incl. normal pair for comparison (S.G. £800).

1973 British Explorers 5p with grey-black omitted variety, mint n.h., very fine, incl. normal for comparison (S.G. Concise 2025 £1'800).

1973 British Explorers 9p with brown-grey printed double variety, mint n.h., tiny indentation at top left, fine, incl. normal for comparison (S.G. from...

1973 British Explorers 9p with brown-red (rivers on map) omitted variety, mint n.h., post office fresh (S.G. £650).

1973 British Paintings set of four mint n.h. imperforate imprimaturs from the foot of the sheet, each with "BPMA" handstamp on reverse, very fine and scarce.

1973 Royal Wedding 20p with silver (Queen's head) omitted variety on middle stamp in a mint n.h. right marginal vertical strip of five, with adjacent stamps...

1974 Winston Churchill 5 1/2p imperf. imprimatur in mint n.h. traffic light corner block of four, each with "BPMA" handstamp on reverse, very fine and...

1978 Historic Buildings miniature sheet with red omitted error (Union flag on the Tower of London), mint n.h., post office fresh, only 6 examples recorded...

1984ca. Harrison & Sons phosphor tagging trial on perforated dummy stamps of Thomas Richard Harrison in emerald-green on gummed paper, four examples eac...

1973 Machin undenominated proofs produced during commissioning of the Jumelle press, tête-bêche gutter block of eight with four in light violet (colour...

1973 Machin undenominated proofs produced during commissioning of the Jumelle press, three pairs in violet (approximating the colour of the 5p), turquoise...

1997 Courvoisier Machin undenominated trials in set of three printed in deep green, light grey and in flame red, as used for the 2p, 20p and 1st class...

2003 De La Rue Machin colour trials with "00p" value, mint n.h., in red, bright orange, grey-black and bright blue, very fine and scarce.

2004 Ocean Liners unissued imperforate souvenir sheet with "53" pence instead of "57" and "38" instead of "E", a highlight for a modern error or ship thematic...

Admiralty Official: 1904 1/2d. postcard, type 2, from Devonport dockyard to Keyham dated (Ap.25.04), a major rarity with very few examples known.

Army Official: 1903 6d. dull purple pair (type 2 form 4), very lightly mounted mint; very rare believed to be one of 5 pairs known (S.G. £6'000).

Inland Revenue: 1892-1901 5s rose mint o.g. with variety "raised stop after R", small light wrinkle at top mentioned for accuracy, very fine (S.G. £7'500).

Inland Revenue: 1890 10s ultramarine irregular used block of 15 lettered KE-NG, each cancelled by a light strike of the oval "ACCOUNT BRANCH / 1 Oct 94/...