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In Reply to: Mullard GZ-34 F31 smooth plate ID posted by SoCalAl on March 7, 2023 at 09:46:57:
I see f31, B81 code on the tube at the left. Blackburn, 158/68 or 78 probably 31st week???
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Follow Ups
- RE: Mullard GZ-34 F31 smooth plate ID - dogscanskate 05:10:35 03/08/23 (3)
- RE: Mullard GZ-34 F31 smooth plate ID - dogscanskate 05:11:39 03/08/23 (2)
- RE: Mullard GZ-34 F31 smooth plate ID - opalize 13:27:19 03/08/23 (1)
- RE: Mullard GZ-34 F31 smooth plate ID - dogscanskate 05:36:09 03/09/23 (0)