Heljan 3901 LNER Gresley O2/2 Tango 63937 BR Late BlackHeljan 3901 LNER Gresley O2 2 63937 BR Late Black ** This item is Pristine, not Weathered as originally advertised. ** Introduced by the Great Northern Railway in 1921 to a design by Nigel Gresley, these powerful 2 8 0s were built to haul heavy mineral trains. Several batches were built over a 22 year period by the GNR and LNER, with numerous improvements such as better cabs and bigger tenders. Tech Specs: NEM Couplings Sprung Buffers 21 Pin DCC