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In Reply to: RE: Look to have Valvo, Hamburg "D" code posted by gradEHoser on August 6, 2016 at 18:08:01:
D1L3 = Hamburg, Valvo plant. 1961 (or 71). L = December (12th month). 3 = 3rd week.D0I2 = Hamburg. 1960. I = September (9th month). 2 = 2nd week.
What letters are in the second line? This usually is the tube sub-type.
Edits: 08/06/16 08/06/16
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Follow Ups
- RE: Look to have Valvo, Hamburg "D" code - FenderLover 18:39:47 08/06/16 (3)
- RE: Look to have Valvo, Hamburg "D" code - gradEHoser 18:44:41 08/06/16 (2)
- Interesting... - FenderLover 18:53:33 08/06/16 (1)
- Could it be "Df" - FenderLover 21:06:00 08/06/16 (0)