Ancient opaline corrugated lampshade

Opaline glass worked in white opaline waves, transparent glass like glass paste. Shape: frilly parisian, like a pleated skirt. Several models available: the shape of the serrated can vary. Can fit on a rise and fall. Size: diameter 25 cm/diameter 10 inches. Comes with bayonet socket and metal claw (the shape of the mounting claw may vary from the photo) (works with a b22 bulb, not provided).