Estimated Date: 1908
Name: Green and Bauer, Grundlach type X-Ray Tube
Manufacturer: Green and Bauer
Description: l6 inch long X-ray tube, blackened partially by use. Partial vacuum created by heating a palladium wire, which is protected by a test tube on cork. Has initial G readily identifiable as well as made in Germany and serial number.
Reference 1: 34