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NNelco replied to the thread For 6BL7 tube users.Many thanks for the insight, certainly a lot more than i knew :) Knowing now that they are legit tubes and not likely to fry my...
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NNelco replied to the thread For 6BL7 tube users.I did try with both white and UV light but i can't see any markings. I would have expected country of manufacture at least but nothing.
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NNelco replied to the thread For 6BL7 tube users.Many thanks indeed Gibosi, much appreciated. Any idea as to a rough date of manufacture and why it would be completely unmarked by the...
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NNelco replied to the thread For 6BL7 tube users.On the subject of 6BX7's a little while ago i purchased 3 Westinghouse branded tubes of this type for a modest sum. All tubes came in...
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