The Adams radial at the Bluebell is not in either of the liveries on the Hornby M7s. It is in Adams pea green livery 1887-95, but has some later modifications. The cab roof , coal rails on the bunker , taller water filler and lack of balance beams between the driving wheels were modifications by Drummond , also a mechanical lubricator between the frames possibly fitted by the Bluebell. So preserved locos usually are not perfect representations of a past period .