An antique, blown glass lamp shade of conical shape with threaded bronze mount. Perhaps an insert to a bronze light fixture. It is signed for Tiffany Studios but the conical shape is unusual, although the iridescent blue glass was used by Tiffany.
False signature: L.C. Tiffany Favrile but not by Tiffany.
Late 19th/early 20th century
Width 3.25 Depth 3.25 Height 4.5 inches
Brass fitter: Width 1.5 inches