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In Reply to: Do All Phillips Ecc83 Have Etched Codes? posted by gradEHoser on October 28, 2016 at 13:27:32:
My WAG:EO = ECC803S or E83CC
3(?) [not equal sign] = third type? Siemens/Halske, Munich plant
B(?) 7 = February, 1967 (or 77)
Edits: 10/28/16
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Follow Ups
- Code is in three pairs, laying sideways - FenderLover 18:05:24 10/28/16 (3)
- BTW... A most excellent tube. 8^) n/t - FenderLover 18:16:06 10/28/16 (2)
- RE: BTW... A most excellent tube. 8^) n/t - gradEHoser 19:55:06 10/28/16 (1)
- Check photo in link - FenderLover 21:54:11 10/28/16 (0)