Octron Ltd., 32 Charlotte St., Birmingham UK. Company previously named H.S. Electric Co Ltd., which made valves/tubes under the Octron name.
The tubes were made with an unusual octagonal base.
Octron Ltd., 32 Charlotte St., Birmingham UK. Company previously named H.S. Electric Co Ltd., which made valves/tubes under the Octron name.
The tubes were made with an unusual octagonal base.