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Original Message
Re: Red or Blue glass?
Posted by steven oda on March 15, 2002 at 08:11:23:
Bob,
Those are Tesla J34L. czech made. In the 70-80's you could get them with clear, red, or blue glass envelopes (a gimmick).
But, some sware that the blue glass E34L sounded better. Sure do look neat.
I don't think Ruby has put it's name onto the newer JJ made EL34 or E34L.