1890-94 Coat of Arms, 1/2p-10sh, £1 dark blue, £2 rose, £5 yellow green and £10 orange brown, complete set of 19 different sheet margin blocks of four, unused without gum, fresh, fine-v.f., top value with 2001 Sismondo certificate. A rare set of blocks (catalogued as singles with original gum) cat. $26548 (Cat No. 1-19,24,25) (Image)

Cat. $26548, Est.US$5,000

1890 £10 orange brown, unused (regummed), fine (catalogued for stamp with original gum) cat. $3000 (Cat No. 19) (Image)

Cat. $3000, Est.US$200

1896-1903 presentation set of 16 to £1, with diagonal italic "Specimen" overprints (Samuel type R3), with 1896-97 Arms (nine different) and 1898 issue 1/2p-£1, couple of minor thin spots, mostly fine-v.f. (SG 34/90s) (Cat No. 32/72S) (Image)

Est.US$150

1898 1p red, imperforate left sheet margin block of four, h.r. at top, bottom pair n.h., v.f. (SG 78b) (catalogued as hinged pairs) cat. $2000 (Cat No. 59a) (Image)

Cat. $2000, Est.US$750

1898-1908 2 1/2p-£10 perforated Specimen (type R5), set of 10, l.h. or h.r., fresh, fine-v.f., scarce (SG 80-93s) cat. £900 (Cat No. 62/75S) (Image)

Cat. £900, Est.US$500

1910 Queen Mary and King George V Issue, perforated 14, complete set of eighteen to £1, overprinted Specimen, removed from archival pages so the majority with backing adhesions, few minor creases and blunt perfs, mostly fine-v.f., scarce set of Specimen overprints (SG 119s/185s) cat. £3750 (Cat No. 101-118S) (Image)

Cat. £3750, Est.US$1,500

1910 Double Heads, 1/2p and 2p perf. 14, used in 1911 on Registered 4p stationery entire to Wurzburg, Germany, with pink Bulawayo registration label. The stamps are canceled by Bulawayo departure pmks, London transit and Wurzburg arrival pmks on back, v.f. (Image)

Est.US$250

1910 5p olive yellow and brown, error of color, l.h., v.f., with 1985 Brandon certificate (SG 141ab, £650) (Cat No. 107a) (Image)

Est.US$250

1910 £1 gray black & red perf. 15, Salisbury 15 Dec 12 cancel, small thin, fine appearance, scarce, cat. $4750 (Cat No. 118c) (Image)

Cat. $4750, Est.US$750