Leaded glass & patinated bronze. Circa 1910. Shade impressed TIFFANY STUDIOS NEW YORK 1520. Base impressed TIFFANY STUDIOS NEW YORK 28622 with Tiffany Glass & Decorating Company Monogram. Literature: Alastair Duncan, "Tiffany Lamps and Metalware" Ref. #303. Ht. 27" Shade Dia. 24".