This is a H0 (1:87) model of a czech diesel locomotive 742 from the Jan Zeleny's Mashinky game (see the mashinky.com website). This locomotive can be used for model railways.
Read more at: https://blog.prusaprinters.org/3d-printed-railway-models-part-ii-trains-and-buildings/
This model can be printed with the MSLA technology. Generate supports manually to ensure its proper position. Support all the overhang parts, use 0,3mm support head diameter for tiny parts.
The wheels should be printed perpendicular to the surface to make them as round as possible.
Print the model with 0,025mm layers to get the best results.
The author hasn't provided the model origin yet.