British Guiana. 1852 (1 Jan.) Waterlow. 1c. black on magenta, good to large margins, used with faint Demerara cancellation; some light surface rubbing as often found, the surface has been touched up in a few places, still a presentable example of this scarce and popular stamp. Peter Holcombe Certificate (1993). S.G. 9, £5,500 (Image1)

Est. £800-1,000

British Guiana. 1852 (1 Jan.) Waterlow. 1c. black on magenta, two used examples, the first just touched to clear margins and light double-arc c.d.s, faint crease, B.P.A. Certificate (1996), the second example with good margins all around and clear central demerara c.d.s., torn and thinned with a repair at upper left, Brandon Certificate (2004). S.G. 9, £11,000 (Image1)

Est. £1,000-2,000

British Guiana. 1852 (1 Jan.) Waterlow. 1c. black on magenta tied to small piece by 'demerara' c.d.s., huge margins and fresh appearance, faint trace of a crease, exceptional colour and fine; an outstanding example with fine pedigree. Guilio Bollafi (1963) and Peter Holcombe (1981) Certificates. S.G. 9 (Image1)

Est. £4,000-6,000

British Guiana. 1852 (1 Jan.) Waterlow. 4c. black on deep blue, two used examples, the first just touched on one side but with clear margins elsewhere and neatly cancelled by 'demerara' c.d.s., some surface rubbing and a light corner bend, Brandon Certificate (2004), the second example cut-into at left and foot, cancelled by 'demerara' c.d.s. and with a large amount of surface rubbing and creasing, Sergio Sismondo Certificate (2015). S.G. 10, £24,000 (Image1)

Est. £1,000-2,000

British Guiana. The 1856 Provisional 4 cents. 1856 4c. black on magenta initialled 'caw' by the post official C.A. Watson and cancelled by central strike of 'demerara' c.d.s of March 1856, huge margins and part sheet margin at top; light vertical crease at left through 'postage', fresh colour and a very fine example of this rarity. R.P.S. Certificate (1997). S.G. 24, £25,000 (Image1)

Est. £10,000-15,000

British Guiana. 1863-76 perf. 15 24c. yellow-green, small part original gum; a few short perfs. in places, otherwise fine. S.G. 114, £850 (Image1)

Est. £150-250

British Guiana. 1878 Provisional, Official (1c.) on 4c. blue with one horizontal bar and one vertical bar, used with small fault at foot, nevertheless a rare stamp. Brandon Certificate (2000). S.G. 147, £5,500 (Image1)

Est. £400-600