CV3581 power triode
This is a tungsten filament triode for use as a medium wave oscillator. The equivalent V1501 was used in the MB2 mobile ground radar transmitter.
*: at 500mA anode current and 1kV anode voltage
It is recommended that the valve be mounted vertically and that the anode connection act to steady the valve
On the base, the two large diameter pins are the filament connections, and the smaller diameter pin is the grid.