NBR/LNER J37 (S class) loco
Introduced from 1914. Primarily used on heavy freight. Successful design, last examples lasting till 1967.
Requires chassis and finishing
O scale (1/43.5, 7mm/ft)
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more info about LNER/NBR J37 locos here
https://www.lner.info/locos/J/j37.php
https://en.wikipedia.org/wiki/NBR_S_class
more 3d printed models from Recreation21 here
https://www.rue-d-etropal.com/3D-printing/3d_printed_designs.htm
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