1903) was essentially an 0-6-0 goods version of the S46 and the Class S69 (built between 1911 and 1921) was a larger 4-6-0 version using many of the same design cues as the H88, built to replace the Clauds on the heaviest express trains. Classification and numbering The classification of the Claud Hamiltons is complex but is summarised here: GER Class S46 (LNER Class D14), 4 ft 9 in diameter boiler, round-top firebox GER Class D56 (LNER Class D15), 4 ft 9 in diameter boiler, Belpaire firebox LNER Class D15/1, D15 as built with short smokebox, some with superheater LNER Class D15/2, D15 with superheater and long smokebox GER Class H88 (LNER Class D16), "Super Claud" with superheater, larger boiler (5 ft in diameter) and Belpaire firebox LNER Class D16/1, D16 as built (with short smokebox) LNER Class D16/2, as D16/1 but with extended smokebox LNER Class D16/3, Gresley rebuild of D15 and D16 with round-top firebox, some with piston valves The class pioneer was numbered 1900 (to coincide with the year the locomotive was built), with subsequent batches numbered backwards in tens as follows: The Railway Magazine of November 1923 includes the log of a run from Liverpool Street to Ipswich with 4-4-0 number 1780, so this loco at least must have carried a GER number. Appearance Originally painted in GER blue with red lining and bronze highlights, following the 1923 grouping the GER became part of the London and North Eastern Railway, and were painted in the company's apple green with LNER on the tender and cab-side numbers. Side rods were polished steel. The appearance was altered when a larger boiler and Belpaire firebox was fitted, meaning a change in the cab window shape as well. 8783 and 8787 were kept in immaculate condition as dedicated Royal locos for hauling the Royal Train from King's Cross to Wolferton (the nearest station for Sandringham House). 8783 was also fitted with a copper-capped chimney. Later some locos carried numbers and London & North Eastern Railway on the tender. During the Second World War most were repainted into unlined black livery with the letters "N E" on the tender. "Royal Claud" 8783 retained its LNER apple green livery into British Railways days (after 1948), but with BRITISH RAILWAYS on the tender initially. Others were painted black with BRITISH RAILWAYS on the tender. Later on they carried both lined and unlined black