This offering features a rare piece of American industrial history: a Ken-Rad 2051 gas tetrode in its Original Government Box. The packaging is a classic example of mid-century military supply aesthetics, preserved in remarkable condition.

The box bears the official branding of the Ken-Rad Radio Division, a manufacturer renowned for producing high-durability components during the Golden Age of vacuum tube technology. While the tube is sold as untested, the pristine state of the original carton and the presence of the Bottom Square Getter and clear glass suggest a valve that has never seen service.