BE AWARE THERE ARE 4 PLATES, ALL IN PERFECT CONDITION, PICTURES ONLY SHOW 3. Rare D.R.G.M. Dark Amber / "Black" Uranium Glass Ashtray – Germany, c. 1920–1940 ​ Offered for auction is a rare and unusual dish / ashtray made from dark amber "black" uranium glass. In daylight, the piece displays a deep, dark amber/smoky tone. Under UV light (395 nm / 365 nm), it fluoresces a vibrant, striking green due to the presence of uranium oxide. ​The underside is marked with the original D.R.G.M. stamp (Deutsches Reichs-Gebrauchsmuster), indicating German production between 1891 and 1945 (likely Art Deco period, c. 1920s–1930s). ​Origin: Germany ​Period: Circa 1920–1940 (Art Deco) ​Markings: "D.R.G.M." embossed in the glass ​Material: Uranium glass / Hyalite glass ​Feature: Strong green fluorescence under UV light ​Condition: Excellent condition with NOT A SINGLE chip or any form of scratching or damage.