Postal Stationery. 1900 SIX CASH (in violet) on ½ch yellow-green wrapper, very fine unused, exceptionally with very clear surcharge triple, two albino. Most unusual. Deschl W2 (Image)

1914-22 5ca olive-bistre, with watermark A sideways, upper marginal block of 4 of two horizontal pairs, imperf between, fresh unmounted o.g. Very fine. SG 24a, £150 (Image)

1914-22 5ca olive-bistre watermark A sideways, upper marginal horizontal strip of three, imperf between, fresh unmounted o.g. (typical patchy gum). Very fine. SG 24b, £190 (Image)

1914 ½ch reddish violet horizontal pair with watermark 'A' sideways, imperforate between, fresh mint with large part original gum. SG 26b, £375 (Image)

1924-39 watermark C 5ca chocolate horizontal pair and 3ch violet vertical pair, each marginal and imperf between, fresh unmounted o.g. (typical patchy gum). The odd shorter perf, otherwise fine. SG 34a, 44a, £150 (Image)

1924-39 6ca brown-red watermark C, right marginal vertical pair, imperf between, fresh unmounted o.g. (typical patchy gum). Minor bends, still very fine and scarce. SG 35b, £250 (Image)

1924-39 ¾ch mauve watermark C, vertical pair imperf between, neatly cancelled by parts of ADOOR CDS. Light creasing, still fine appearance and very rare. SG 39ab, £375 (Image)

1931 Coronation set of three in imperforate proof blocks of four, in issued colours on unwatermarked wove paper (6ca, 3ch) or thin glazed card (10ca). Also another 6ca imperforate vertical pair, with papermaker's watermark For SG 47/9 (Image)

1937 Temple Entry 12ca, 1½ch and 3ch, three values, each an imperforate proof in shades of bright blue on thick glazed wove paper. Attractive and rare, not previously seen by us. The designs show much greater clarity of detail than is visible on the issued stamps. For SG 61/3 (Image)

1939 1ch perf 11 vertical strip of three, 3ch perf 12½ horizontal pair, and 1941 6ca and ¾ch perf 11 vertical pairs, each imperforate between, large part o.g with fresh colours. SG 64bb, 67b, 71ab, 72bb (Image)

Official. 1911-30 Type O1 overprint watermark B 4ca, ½ch (with R5/6 CHUCRRAM) and watermark A 5ca (with listed inverted letter varieties at R1/7, 6/1 and 7-8), 10ca (with inverted "O" at R1/7), each in a folded sheet of 84 (14x6), different settings, fresh unused. Also 1926-30 10ca pink, Type O2 overprint, showing "Right S inverted" (R4/9) and error "Left S omitted" at R4/10, and 1930-39 3ch, Type O7 overprint (in red), in similar folded sheets. Mostly fine, and a fascinating lot for the specialist. Between SG O1/61, £1100+ (Image)

Official. 1911-30 1ch chalky blue (watermark B, overprint Type O1) lower marginal block of four, showing R5/7 'nO' for 'On' on upper right stamp, very fine unused with strong colour. SG O5, d (Image)

Official. 1911-30 1ch chalky blue, type O1 overprint with watermark B, complete folded sheet of 84 (14 x 6) with "nO" for "On" (R5/7) and apparently showing "S S inverted" at R1/1, unused. Odd small faults and R5-6/14 officially patched and replaced (by a pair from R1-2/14), still a rare item. Also 1926-30 10ca pink, Type O2 overprint, similar folded sheet, showing "Right S inverted" (R4/9) and "Left S OMITTED" at R4/10, fresh unused. SG O5, d, 31, h, i (Image)

Official. 1911-32 range of eight error blocks, comprising Type O1 overprint inverted on watemark B 1ch (block of 12) and 3ch and watemark C 5ca, Type O1 overprint double on watermark A 1¼ch, Type O6 overprint double (in red) on 4ch, Type O7 overprint on 10ca pink block (two imperf between vertical pairs), and 1932 6c on 5ca chocolate (Type O2 overprint) and 1ch8c on 1¼ch (Type O7 overprint) each with surcharge inverted, very fine unused, with all but the last marginal. Fascinating lot, with some scarce. Between SG O5b/82b, £754+ (Image)

Official. 1911-30 2ch red with Type O1 overprint double and also showing 'O' inverted, together with ½ch reddish violet, error overprint inverted and additionally showing R5/6 CHUCRRAM, good used. A remarkable pair. SG O6eb, O17eg (Image)

Official. 1911-30 4ch slate-green (watermark B, overprint Type O1 inverted), upper marginal block of six (3 x 2), very fine unused. SG O10b, cat £450 (Image)

Official. 1911-30 Type O1 overprint range of inverted letter varieties, comprising R1/7 "Inverted O" on watermark B 4ch, watermark A 5ca, 6ca, 10ca, 1¼ch and watermark C 7ch, in matching upper marginal strips of three, R6/1 "Inverted left S" on watermark A 5ca, 6ca and watermark C 5ca, 7ch (all corner marginal, three in multiples), and R6/7 "Inverted right S" on watermark A 5ca in lower marginal horizontal strip of four, unused. An exceptional group, in very fine condition. Between SG O10d/26b (Image)

Official. 1911-30 10ca pink Type O1 overprint watermark A (sideways), complete unfolded sheet of 84 (14 x 6) showing inverted "O" at R1/7 and other unlisted flaws, the right column without watermark, fresh and fine unused. Also similar sheet (creasing and light toning in left column) of 5ca olive-bistre, from a different setting, also with inverted "O" at R1/7, but additionally with "Left S inverted" at R6/1 and 6/8, and "Right S inverted" at R6/7, no watermark in left column, and "overprint double, one albino" clear on most stamps. The odd bend. SG O14, b, d, 18, d, £593+ (Image)

Official. 1911-30 5ca olive-bistre overprinted Type O1, watermark A sideways, complete unfolded sheet of 84 (14 x 6) with R1/7 "Inverted O", R6/1 and 6/8 "Left S inverted" and R6/7 "Right S inverted", the right column without watermark, and similar 10ca pink sheet from a different setting, also with R1/7 "Inverted O" with other unlisted flaws, and the left column without watermark, both fresh and fine unused. Also 1926-30 10ca pink with Type O2 overprint sheet (folded) with R4/10 "Left S OMITTED" and R4/9"Right S inverted". A scarce and interesting trio. SG O14, b, d, O18d, O31h, i, £699 (Image)

Official. 1911-30 6ca orange-brown with Type O1 overprint in BLUE, watermark A sideways, horizontal pair from R6/7-8 showing varieties "Right S inverted" and "Left S inverted" se-tenant, fine unused. Very scarce. SG O16c, d (Image)

Official. 1911-30 10ca pink with Type O1 overprint, watermark A (sideways), complete unfolded sheet of 84 (14 x 6) showing inverted "O" at R1/7 and other unlisted flaws, the left column without watermark, fresh and fine unused. SG O18, d, £311+ (Image)

Official. 1911-30 10ca pink overprinted Type O1, watermark A (sideways), complete unfolded sheet of 84 (14 x 6) showing inverted "O" at R1/7 and other unlisted flaws, the right column without watermark, fresh and fine unused. SG O18, d, £311+ (Image)

Official. 1911-30 10ca pink Type O1 overprint, watermark A (sideways), complete unfolded sheet of 84 (14 x 6) showing inverted "O" at R1/7 and other unlisted flaws, fresh and fine unused. SG O18,d, £311 (Image)

Official. 1911-30 14ch orange-yellow (watermark C, overprint Type O1). A vertical pair showing error imperforate between, unused. Tear at base of upper stamp, otherwise fine and fresh, previously unrecorded and likely unique. SG O27 var (Image)

Official. 1930-39 5ca chocolate overprint Type O7 (14mm high) inverted, lower right corner block of four, very fine unused. SG O51a, £440 (Image)