4 industrial enamelled lampshades

4 huge industrial lampshades. Factory pendants / lights. Green enameled metal for the exterior and white for the interior. Ht: 26.5 cm. Diam: 46 cm. The 2 pieces at the bottom in the photos have a slightly faded enamel on the upper part. No shocks. A few rare traces of oxidation at the level of the fixings and on the edges.