Dessay Double sconce by Jonathan Browning Studio

https://www.jonathanbrowninginc.com/products/wall-fixtures?deep=DessayDoubleSconce 

Modeling for smoothing: the Turbosmooth modifier is present on the panel - it is open, adjust the smoothing level at your discretion. In the preview, the Turbosmooth iteration = 1.

Renders are made in Corona Render 8.1. Corona Legacy Mtl.
"For Corona Render: it is recommended to install version not lower than 1.5, since the glossiness of materials is configured taking into account PBR."