1920's IRIDESCENT ART GLASS PERFUME LAMP: Threaded and pulled feather art glass attributed to Durand. The base is signed W.B. MFG. CO'' and ''PAT. AUG. 28 23 USA,'' shade is unsigned. 4 parts with base, shade, perfume cup and cap. Please note there is very minimal thread loss, tiny rim chip, and the cap has no finial. 10 1/2''h.