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In Reply to: GE 12AT7/ECC81 Great Britain maybe Mullard? posted by B. Scarpia on April 18, 2021 at 09:24:34:
The "B" is for the Philips/Mullard Blackburn plant.Tre'
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Edits: 04/18/21
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- RE: GE 12AT7/ECC81 Great Britain maybe Mullard? - Tre' 10:42:41 04/18/21 (0)