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

1892-94 4sh gray black & vermilion, bottom Bradbury Wilkinson imprint block of eight, n.h. (except one stamp with small patch of dry gum), fine-v.f., scarce positional multiple (SG 26) (catalogued as hinged singles) cat. $484 (Cat No. 13) (Image)

Cat. $484, Est.US$150

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

1899 £5 blue and £10 violet, sheet corner margin singles, unused without gum, fine-v.f. (catalogued as singles with gum) cat. $7500 (Cat No. 74,75) (Image)

Cat. $7500, Est.US$750

1905 Victoria Falls, complete set of six, n.h. and post office fresh, 2 1/2p and 1sh with natural gum skips, well centered, fine-v.f. (catalogued as hinged) cat. $434 (Cat No. 76-81) (Image)

Cat. $434, Est.US$250

1910 Queen Mary and King George V "Double-heads", 1/2p-£1, selection of 25 different, various shades and perforations, fresh, mostly fine-v.f. (SG 120/165) (Cat No. 101-118) (Image)

Est.US$3,500

1910 Double Heads 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 7sh6p bright blue and carmine, h.r., v.f., cat. $725 (Cat No. 116) (Image)

Cat. $725, Est.US$250