Two electronic valves (beam tetrode), Type 6L6GC, manufactured for Mullard in original packaging. Used as spare parts for the MUDPAC analogue computer. This valve most probably would have been used as a series regulator in a power supply.

Physical Description

Tubular glass bulb with dome top on an octal base (6 pins present). Cardboard box with blue, pale green and white background; red, white, blue and pale green printed text. Columns of printed numbers on the inside of the box.

More Information