Waterlow sample stamp sheets of nine in unissued colours, 10c lilac and black sheet, each stamp with a small punch hole and "WATERLOW & SONS LTD. / SPECIMEN" overprint; and 5f green and black sheet with zig-zag perforations resulting in two imperf between vertical pairs and two imperf between horizontal pairs with the central stamp perforated on all four sides. Two attractive sheets, the 5f sheet gummed. (2).

1894 25 Frame Progressive Die Proof, the upper portion (including "25" values) and certain edge details not yet engraved, in brown, die sunk on white wove paper, 75x61mm. Possibly unique, from the Waterlow archives. Photo included on Back Cover. (Image1)

1894 40c Frame Die Proof in pale brown, die sunk on white wove paper, 118x153mm, three peripheral creases all well clear of the printed proof, a rare proof (possibly unique in this colour), from the Waterlow archives. Photo on Page 168. (Image1)

1897 (Dec 14) Philatelic registered cover to F.G Kuck in Brussels bearing 1891 10c and 1894 Mols 5c, 10c, 25c and 50c, tied by blue Matadi datestamps with boxed "Recommande", arrival backstamp. All these first colour 5c and 10c stamps were sold by the Belgian Colonial Office to Kuck, a speculator in Brussels, and were never issued in the Congo, with 5c and 10c stamps having to be printed in new colours and issued in the Congo in 1895. These first 5c and 10c values were however valid, their genuine postal use in the Congo understandably being very scarce. An attractive and scarce cover. Photo on Page 146. (Image1)

1901 1f Black and bright carmine, perf 15 block of four fine mint, scarce. S.G. 35, £1,900, B.26a, €1,980. Photo on Page 158. (Image1)

1905 10f Black and green, perf 12 pair watermarked with "S WRIGLE" part paper makers name, fine mint, scarce and unusual. S.G. 29a, £1,800+, B.29a, €1,760+. Photo on Page 140. (Image1)