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"Foreign" marked B9A valves
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19th Nov 2017, 11:43 pm
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paulsherwin
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Location: Oxford, UK
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Re: "Foreign" marked B9A valves
By the late 60s valves could come from anywhere, regardlesss of the branding. Mullard generally just remarked valves from within the Philips group, but other manufacturers sourced them from all over the place.
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