Hi
looks original to me …. This is the largest screwback case at 36.5 ( measured between 12 and 6) Zenith offered.
I gave one in my collection ….. I wrote about these like 20 years ago …
from my notes about my example ..
Zenith Chronometre in a steel screwback case 36.5 mm "Captain" case..
- Produced : 02.09.1960
- Series of 50 pieces
- Calibre 135
- Reference 2/3200
I don’t know if they had more than one production run.
congratulations
Bill
Ps here a photo of mine and a group shot at a zenith event in NYC about 2 years ago
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