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IEC Servicemaster 6GW8 Box

    
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IEC

IEC Servicemaster was a major distributor and re-brander of valves in the USA. They where based in New York and bought valves from RCA, Sylvania and General electric. These valves were marked with their own names such as IEC-Mullard, IEC- Servicemaster etc.
The box is 26 mm square and 82 mm long. The valve is held in place by a diagonal card flap.

 

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