Genalex / GEC Tetrode Tube Model unknown

Manufacturer: Genalex / GEC

Model Number: unknown

Serial #:

Equipment Description: Tetrode Tube

Label Write-up:
Genalex currently makes audio tubes for high end audio systems. But this tube is four pin with two top pins so it is probably much older and for a different use. It has two grids and a filament. Made in England

Dates Produced: 1940s?

Original Price:

The museum's inventory number: MRT-1844

Located at Museum in: Tube Display Room