Hytron HY114B triode

The valve measures 63x32mm overall and has an octal base with 5 pins fitted. The anode and grid are connected to the top caps.

The HY114B, equivalent to 2C24 is a VHF triode, 1.4V/120mA heater, 2.5W output, µ of 12, and is useable up to 300MHz.