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Full Version: Philips (Including Mullard) Factory Valve Codes.
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Joe

25-11-2012, 05:02 PM
A guide to the factory valve codes etched onto Philips valves. Handy when the printed type numbers have rubbed off.
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Golborne Vintage Radio > The Archive (15+ posts needed to download attachments) > Books & Literature > Valves > Philips (Including Mullard) Factory Valve Codes.