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In Reply to: RE: 5AR4 Identification Help posted by Paully on July 03, 2008 at 08:16:53
One in the middle is Hitachi, Japan. Two on the sides appear to be Mullards. Just look for etched date codes on the lower half to confirm.
Follow Ups:
I was just perusing your library (very nice by the way) and figured out that the one in the middle is indeed a Hitachi and the one on the right in the Mazda box has the etched codes so looks like a Mullard. I hope the jangling I hear in the tube doesn't cause any problems.
The GE has F1 1x8-5 in paint on the glass, not etched. Can't read the number for the x. Same structure but the glass bottle has seams.
GE label could be Matsushita, Japan.
Cool, I think you are right and I appreciate the help. Only one Mullard but all good tubes.
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