"The Great Northern Railway (GNR) Class O2 was a class of three-cylinder 2-8-0 steam locomotive designed by Nigel Gresley for freight work and built by the GNR from 1921. Further examples were built by the London and North Eastern Railway (LNER) from 1924."@en . "3"^^ . . . "1921Z"^^ . "1943Z"^^ . . "GNR Class O2"@en .