Like new raw softwood (probably Pine) and ferrous metal (steel?) wine rack.
The wood is Unfinished and would benefit surely from some varnish or some linseed oil. This could be a great project for someone to do as a DIY and be a great project for the wine rack, and an even greater pleasure to empty it!!!
There’s a diagonal brace to facilitate wall mounting.
As a random aside, I accidentally wrote “DUI” instead of “DIY” first typing this and I just think the irony too good to go unsung.