Cf Economique Gironde K type wagon (1883-5 build)
One of many wagons built for French standard gauge railways before WW1.
This model is based on design for railways in Gironde, but similar wagons were also built for other French railways, and could be found in many parts of France (and beyond).
Requires finishing, chassis and wheels.
1/35th scale(41mm gauge)
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more info about Chemin de Fer Economiques here
https://fr.wikipedia.org/wiki/Soci%C3%A9t%C3%A9_g%C3%A9n%C3%A9rale_des_chemins_de_fer_%C3%A9conomiques_(France)
more 3d printed models from Recreation21 here
http://www.rue-d-etropal.com/3D-printing/3d_printed_designs.htm
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