372-403A LNER J39 with Stepped Tender 64739 BR Black (Late Crest)The London and North Eastern Railway (LNER) Class J39 was a medium powered 0 6 0 steam locomotive designed for mixed traffic work throughout the former LNER system between London and the north of Scotland. The class was introduced by Nigel Gresley in July 1926, based on his previous Class J38 (introduced in January 1926) but with larger driving wheels. The larger wheels enabled them to be used on both passenger and freight trains, although at the