Friedrich and Karl Rudolf Ditmar, R. Ditmar (Vienna, Austria, founded c. 1839) Etched mark: R. Ditmar, Wien, Made in Austria. Made for the Anglo Indian market this hundidefinition lantern features a clear blown glass bell with glass terminal, all suspended by a metal collar, chains and glass smoke cap. Originally used for candles, this fixture will include electrification with a 3-light candelabra socket cluster.