There are 3 copies of the model saved in the scene each with its own customized material.

On the models is assigned Turbosmooth modifier with enabled mode the Render Iterations 2 which is applied only during rendering.

The model have full UV unwrap on all parts except for rivets.

Model weight without Turbosmooth:
46985 polygons
47255 vertices

The pivot point of the model is aligned to the center and bottom of the base.
All objects have unique names.
All materials have unique names.