Newsgroups: alt.guitar.amps
Subject: Re: WTB: GZ34 tube
Date: 13 May 1998 12:00:01 -0700
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Xref: geraldo.cc.utexas.edu alt.guitar.amps:104476
mjol--(at)--kpowerlink.com wrote:
>
> Anybody know a source for a couple of these - I've found Chinese manuf.
> ones, but I would like something better.
>
> Thanks,
>
> Marc
What you have is
G.E. - U.S. made has a copper strip that runs up and down. Excellent.
British made is a Mullard and has a hole in the center of the plastic
locating key on the bottom. Could be branded anything. Etched batch
code towards bottom of glass will ususally have a B in it.
Japanese - could be branded many names. Some have a X shaped seam in
the glass on top. Will also say Made In Great Britain may times, but is
not.
Sylvania Fat Bottle
Holland - Looks like a Mullard but the galss top is flatter. Usually has
a hole in the locating key like a Mullard, since they owned Mullard.
5Y3 - branded by National as a 5AR4.
--
Regards,
Kevin Deal Precision selected fine vintage audio tubes
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