Built by Nasmyth Wilson Co. Manchester, UK in 1935. This meter-gauge YB class loco with pacific 4-6-2 wheel arrangement comes with Caprotti valve gear. It used to serve mg sections of Bengal and North Western Railway, later in Oudh and Tirhut Railway. Finally retired in 1978 from Izzatnagar shed from where it was gifted to National Railway Museum, New Delhi where it is currently standing in a delapidated condition.