Small black bakelite radio valve (vacuum tube) component with six metal pins and cylindrical housing. The exterior bears the Westinghouse Radiotron logo in red. The unit is compact, with a domed top and a flanged base designed for socket mounting.
This valve was part of a radio spare parts case (Case Spare Valves No. 4L, Accession 2020.658) used in military communications systems. Its durable bakelite casing and compact form made it suitable for field use and quick replacement.