The model was created in the 2018 version and saved in the earlier 2015 version.
OBJ format is also available.
There are no third-party plugins, all elements are called by their proper names.
For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of the materials is adjusted taking into account PBR,
(SCENE IN MILIMETERS)
W. 19 | D. 10 | H. 40 cm

https://www.eichholtz.com/en/wall-lamp-ruby-116690.html