Vacuum Tube - 5V4GA, Rectifier, Full Wave
New-Old-Stock (NOS) tube.
The 5V4GA is a high vacuum rectifier intended for use in full-wave applications. The tube incorporates an indirectly heated cathode which is internally connected to the heater. Except for the use of a straight-sided T-12 envelope, the 5V4GA is identical to the 5V4G.