P1 Cossor metal base Top Pip radio valves tubes of 1922 Detector or A.F. Amplifier
P1 Top Pip metal base by Cossor £ 300 pair.
Description
The P1 made by Cossor here shown have metal base and it is the first of its kind being made in 1922. The P1 and P2 are bright emitter without getter.
P1 metal base, the P1’s anode has a semi-circle shape where filaments are located inside this ‘structure’ makes it suitable for a correct working order, no spring and no hooks to make filament tight. This valve was made for A.F. amplifier. Tested and in working order.
Reviews
There are no reviews yet.