An antique art glass lamp shade by Quezal with iridescent cream calcite color and vertical ribbing and accented with a gold iridescent interior. For a signed example of this model see: Skinner Auction, 2004, Auction 2244, Lot 330.
Quezal Art Glass and Decorating Co. (New York, 1902-24)
Width 5.25 Depth 5.25 Height 4 in.
Fitter: Width 2.25 in.
American Quezal Opalescent Calcite and Gold Ribbed Bell Shape Lamp Shade