CFDT wagon tombereau a faitiere Ux - CF de Tarn
wagon used on CF de Tarn, but typical of metre gauge wagons found on other French railways.
Requires chassis/wheels and detailing.
Scale HO (1/87 3.5mm/ft)
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more 3d printed models from Recreation21 here
http://www.rue-d-etropal.com/3D-printing/3d_printed_designs.htm