1895-96, 1a plum with "Zanzidar" overprint error (from the 1895 Dec setting, with second "z" small and dropped, row 4/6) in used pair with normal, light cds, very fine and rare variety on this value (S.G. £4'000+). (Image)

1895-96, 2a6p yellow-green with second "z" italic in "Zanzibar", mint l.h., very fine variety (S.G. £450). (Image)

1895-96, 6a pale brown with "Zanzidar" overprint error (from the 1895 Dec setting, with second "z" small and dropped, row 4/6), used with light cds leaving variety clear, very fine and rare variety on this value (S.G. £4'250), ex S.G. Auctions May 1968. (Image)

1895-96, 12a purple on red with "Zanzidar" overprint error (from the 1895 Dec setting, with second "z" small and dropped, row 4/6), used with hatched cds leaving variety clear, very fine and rare variety on this value with only seven used examples recorded (S.G. £4'500), ex Sturton. (Image)

1895-96, 5R ultramarine & violet with inverted "r" in "Zanzibar" overprint error, in mint l.h. pair with normal, light horizontal gum bend, red ink spot at right, fine and very rare variety with only nine examples recorded, one in the Royal Philatelic Collection (S.G. £4'750+). (Image)

1895-96 Minor varieties, first "Z" antique (S.G. var. A), narrow first "Z" and broken "Z": first "Z" antique on 1a6p, 2a, 2a6p, 4a and 5R mint and 2a6p (2), 4a and 5R used; narrow "Z" (pos 5/3) on 1a mint & used, and broke "Z" (row 10/3, late printing) on 1/2a, 1a, 1a6p, 2a6p, 12a mint and 1a & 8a used, great lot for the specialist.

1895-96, 2 1/2 on 1a6p (type 2) mint block of nine with second stamps showing "Zanzidar" ovpt error, as well as showing broken p for n on fourth stamp, inverted "1" in "1/2" on sixth stamp and large thick "b" on ninth stamp, slightly toned gum, some perf. reinforcement, a spectacular showpiece for the specialist, cert. RPS (1987) (S.G. £2'200+). (Image)

1895-96, 2 1/2 on 1a6p (type 2) showing "Zanizbar" overprint error, tied to small piece by light squared circle ds, very fine and scarce variety, cert. BPA (2000) (S.G. £1'900). (Image)

1895-96, 2 1/2 on 1a types 3 and 4 (both second setting) se-tenant in mint left marginal block of four, with type 3 on left pair and type 4 on right pair, two diagonal creases affecting lower right stamp, otherwise fine and scarce multiple, signed T. Allen, cert. RPS (1985) (S.G. £1'350+). (Image)

1895-96, 2 1/2 on 1a6p selection incl. type 6 in mint n.h. lower marginal block of four, some gum disturbance on lower left stamp, slightly toned gum, otherwise very fine and attractive multiple (S.G. £800+), as well as type 7 unused and two type 6 used (S.G. £1'700+). (Image)

1895-96, 2 1/2 on 1a6p mint block of 36 plus separated pair at top left, showing 17 examples of type 6, six examples of type 7 and 15 examples of type 8, on album page with diagram of the setting and highlighting four constant varieties of the "Zanzibar" ovpt, with six stamps in the block hinged, toned gum, a spectacular multiple and a showpiece for the specialist (S.G. £4'830+). (Image)

1896 1a carmine-rose with double overprint variety, used with light cds, very fine and scarce as only one sheet existed, cert. BPA (2001) (S.G. £900). (Image)

1921-29 1c to 10R used set of 20, with extras incl. shades and multiples, the 10R with MR 27 24 cds, fine to very fine (S.G. £800+). (Image)

1936 25c proof in unissued purple and 40c proof in sepia (issued colour), both imperforate on ungummed paper in vertical pairs, very fine. (Image)

1936 40c proof in sepia (issued colour) imperforate on ungummed lined paper in block of four, very fine. (Image)

1956 Photographic essay with 3 rejected designs for the 1957 issue, affixed to card, signed on reverse "W.H. Bird", attractive and scarce. (Image)

1936-67, comprehensive collection written up on pages with 1936 to 10s (2 of each) and set to 10s used, 1936 Jubilee and 1944 Bicentenary Specimens, 1952, 1957, 1961 mint and used and similarly through to 1967, 1964 Jamhuri with varieties incl. inverts and omitted in pairs/blocks with normals, numerous covers throughout plus a section of postmarks.

Postage Dues. 1926-30 1c black on orange in used block of four on piece, cancelled by 5 DE 33 registered cds, very fine (S.G. £640+). (Image)

1926-30, used group with "cent.s" varieties in vertical pairs, with 9c, 18c on salmon (normal with tear), 18c on orange and 21c, each cancelled once in the lower left corner on the normal stamp, fine to very fine. (Image)

1930-33, group incl. complete unused sheets of the 2c, 3c, 6c and 25c on lilac, used set of 6 (some on piece) and unused singles of the 12c and 25c on pink, very fine group. (Image)

1935 (Dec 25) envelope from Kenya, Uganda and Tanganyika with 10c tied by Dar-es-Salaam cds, underpaid with ms "T" and "20c" and franked with 1930-33 12c tied by 27 DE 35 registered cds (the same day of sending, Christmas day!), some minor foxing and horizontal cover fold clear of stamp, fine. (Image)

1936-62, group incl. normal paper mint set, used set and "SPECIMEN" perfin set, and chalk-surfaced mint set plus 20c and 30c used, fine group (S.G. £373).