Nyasaland. 1896-1921 group all overprinted "specimen" comprising 1896 set to £25, 1903-04 set to £10, 1908-11 set to £10 (£10 with some paper adhesion to face) and 1913-21 set to £1, part to large part original gum, some with minor faults such as light toning. S.G. 32s-42s, 59s-67s, 72-82s and 83s-98s, £4,000+ (Image1)

Est. £750-1,000

Nyasaland. 1895 £25 black and blue-green, lightly mounted mint, some very minor toning of the gum which does not affect the fine and fresh appearance of this great rarity. S.G. 31, £16,000Provenance: Robson Lowe, Basel V, April 1978 (Image1)

Est. £3,500-6,500

Nyasaland. 1896 CC £1 black and blue, £10 black and orange and £25 black and green, each overprinted "specimen", large part original gum; £25 with tiny tone spot on reverse, otherwise fine. S.G. 40s-42s, £750+ (Image1)

Est. £250-350

Nyasaland. 1896 CC £25 black and green, overprinted "specimen", large part original gum. S.G. 42s, £450 (Image1)

Est. £150-250

Nyasaland. 1903-04 1d. to £10 set of ten, each overprinted "specimen" (D12), fresh and fine mint. S.G. 59-67, £925 (Image1)

Est. £300-400

Nyasaland. 1919 MCA £10 purple and royal blue, lightly mounted mint, a very fresh and fine example of this popular and rare high value. Signed Raybaudi. S.G. 99e, £4,000 (Image1)

Est. £2,000-3,000

Nyasaland. Revenue Stamp. 1891 B.C.A. imperforate £25 blue perforated "specimen" twice; one rather heavy hinge remainder though a nice example of this rare stamp. Barefoot 10s (Image1)

Est. £500-600