3B24 Half Wave Rectifier Tube. Designed to function as a rectifier operating with a peak of 20Kv and 300mA on the anode. Used in aircraft due to its rugged design. MFR: Raytheon.
True NOS NIB Western Electric USA JAN-CW-3B24 Grey Plate ENGRAVED Vacuum Tube | Reverb
JAN 3B24 WA Military Radio Tube Rugged USN Tests Strong on PopScreen
Vacuum Tube Electronic England 3B24W Tube / Valve 3B24 White Box Untested Qty 1 | eBay