Osram valve

Made:
1940 in England
Osram valve

Osram valve
Science Museum Group
© The Board of Trustees of the Science Musuem

Osram valve possibly type 6J7

Details

Category:
Radio Communication
Object Number:
Y7001.872
Materials:
cardboard, glass, plastic (unidentified) and metal (unknown)
Measurements:
overall: 107 mm 35 mm,
type:
valve