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Re: Help with Mullard date codes

Posted by unclestu52 (D) on July 22, 2006 at 04:40:33

In Reply to: Help with Mullard date codes posted by 2cr4ck on July 22, 2006 at 04:33:43:

Are you sure it is 192? Mullard 12AX7's had an f91/f92 code. If so, then the rest is easy: Blackburn, l959, March. It should have the long plate construction, with the mica sheet shielding the cathodes on the top, halo getter.

Stu

Stu

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