Remember to enable turbosmooth before rendering

Polys: 79 856
Verts: 80230

The model was made according to the references from the Internet.

There are 3 spheres in the scene that have the material of silver bronze and gold. Use them to repaint the lamp in the material you need.

The model is a scan.

For Corona render it is recommended to install a version of at least 1.5 since the glossiness of materials is configured with PBR in mind.