The design of the Miners Lantern is inspired by lamps used by miners in ancient times. IP43 moisture protection involves the use of lamps outside the house, but they can also be placed inside to illuminate the hall, kitchen, etc.

The model is made for smoothing. There are 0 iterations in the scene on the Turbosmooth modifier, when rendering: 2. The pivot is located at the place where the lamp is attached to the wall.

Links to manufacturers' websites:

https://www.luminaire.fr/p/applique-d-exterieur-lampe-de-mineurs-miners-3048212.html 
https://www.worm.co.uk/products/miners-outdoor-wall-lantern?pr_prod_strat=e5_desc&pr_rec_id=cacbc5f44&pr_rec_pid=4649056567356&pr_ref_pid=4649056632892&pr_seq=uniform 
https://www.nowlighting.co.uk/products/Outdoor+Lighting/Outdoor+Wall+Lights/Bronze+Outdoor+Wall+Lights/Miners+Old+Bronze+Wall+Light+1+Lamp+by+Elstead+%28MINERS-WALL%29/3506049862

V-Ray version: 3.5. Who works in V-Ray versions lower than 3.1 be careful, in the materials in the BRDF section there is a Microfaset GTR ( GGX ), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward – which is preferable for you.

Corona version: 5.For Corona render, it is recommended to install a version not lower than 1.5, since the glossiness of materials is configured with PBR in mind.