Heljan 3941 3941 Class O2/4 'Tango' BR Early Emblem Black No.63924 (LNER Cab/GN Tender) Steam Locomotive. RUNNING NUMBER 63924. Introduced by the Great Northern Railway in 1921 to a design by Sir Nigel Gresley, these powerful 2-8-0s were built to haul heavy coal and ironstone trains.
