Gustave Tiffoche pyrite enamelled sandstone ball lamp base

Ball lamp in pyrite enameled sandstone by gustave tiffoche. Unique piece from the 80s signed "tiffoche" debossed around the edge of the base (see photos and zoom in). Very good overall condition and remarkable enamelling. Note a very slight injury to the enamelling visible under the letters "foch" of the ceramist's signature (see photos and zoom in). The total height of the lamp base is 18.5 cm with the socket and 14.5 cm without the socket. The maximum diameter of the ball is 14 cm. Works with a bayonet bulb not supplied. The lampshade visible in the photos is not supplied.