Wall-mounted or table-mounted wrought iron shelf

Wall shelf or to install, wrought iron, handmade, robust, foldable. The object has been carefully cleaned, brushed, sanded. Of a very dark brown color (almost black), it has some traces of surface oxidation (non-piercing). In order to preserve its patina, a matte anti-rust varnish would be possible. But, as it is, it can be used immediately. To install or fix (be careful, it's heavy, the empty shelf = 13.5 kg).