The 4-4-0 inside cylinder locomotive included a number of features that were to appear on later Great Eastern locomotive classes, including a circular polished steel smokebox door surround (instead of the usual horizontal straps) and decorative splashers. Class pioneer No 1900 "Claud Hamilton" featuring red lining and connecting rods, copper chimney cap and GER coat of arms was much admired when it was exhibited at the 1900 Paris Exposition.