British & European Valve Cross Reference 1920 - 1930

British & European Valve Cross Reference circa. 1920-1930

With the exception of an open filaments, valves are seldom defective, even after 70 years. More likely the valve is missing or broken. On vintage radios before 1930, to find exactly the right valve from the original manufacturer is not always possible. Each manufacturer used its own marking's, if the truth were known, most valves were virtually equivalent to those of there competitor's.

British Valve Cross Reference

Cross referencing valves by British manufacturers such as:

Marconi, Mullard, Mazda, Cossor, Osram etc

European Valve Cross Reference

Cross referencing valves by Eupopean manufacturers such as:

Cossor, Dario, Fotos Grammont, Gecovalve, Mazda, Mullard, Philips, Telefunken, Tungsram, Valvo, Vatea, Visseaux, Zenith