Bedside or ambient lamp in enameled sandstone from the 50s/60s

Very pretty little bedside lamp, ambiance, or night light, circa 1960. Sandstone base enamelled in a superb english green (presence of hallmark and signature to be determined, see last photo) topped with a brass socket support rod.lampshade in ivory fabric. Total height 23 cm (foot 13 cm and lampshade 12.5 cm), width 20 cm, depth 13 cm, electric wire 125 cm. In perfect condition (we note a very small dirt at the top of the back of the lampshade, without impact, see photo), this very good quality ceramic lamp will be ideal as a mood lamp in a living room or as a night light in a child's bedroom.