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RE: Long Plate Bugle Boys

K83 is 12au7
The next line is likely a delta or triangle followed a 7.
So Holland made 1957 in either Herleen or Copenhagen.

Bugle Boy equivalent would likely be with delta Herleen. But either can be just as good or expensive.

I am more familiar with 12ax7 and 6dj8.

So your purchase may not be a rip off. In fact it could be a great deal.

BUT if it was a "matched" pair you are after, and you paid quite a difference for each individual tube, not sure if they would work that way. Do you know why the price difference?



"I know just enough to get into trouble. But not enough to get out of it."

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