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Identifying an EL34 tube maker


easyone

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2 hours ago, thebes said:

There is no hole in the center pin so it's probably not Mullard, and I forget the name of the other big maker in Britain.

Are you thinking of Brimar?

 

I think the tube was made in Japan at a facility Mullard helped set up - because of the cross seams on top. I read that the seams on top were a sign of a Japanese makers tubes. I cannot remember where I read that.

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From the Jesse article:

 

"BEWARE: late 1970s production Mullard and RCA (labeled Great Britain) that have crossed seams in the top glass were made in Japan! These are not Mullard UK made tubes, although they were made in a Japanese factory that Mullard helped set up and are decent tubes. "

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