It was originally from an oil lamp, top ring width 8cm, bottom ring width 22cm. The following are from internet search. Autolux spout and Autosit glassware. In 1930, the brand Lilor produced a beak called "Autolux" mounted in lamps running on gasoline, lyre-shaped, suspension or wall lamp.This beak was delivered with a glass and a small opaline reflector called Autosit (n ° 4859) produced by Schott & Gen in Jena (Germany). The glasses from Schott are often mounted on Tito-Landi especially among our German collector friends in place of the original glass rig. The item "German Antique Schott&Gen Jena Autosit White Milk Glass Ceiling Light Shade 30s" is in sale since Sunday, April 14, 2019. This item is in the category "Home, Furniture & DIY\Lighting\Lampshades & Lightshades". The seller is "ukoldshop" and is located in Shenzhen. This item can be shipped worldwide.