Zenith 143-6
The Zenith 143-6 is based on the Excelsior Park cal: 4 with 45 min counter. Incabloc shock protection, Breguet hairspring and Glucadur balance. Manufactured in aprox: 1950.
Example movement from a 36 mm Zenith signed nickel/steele cased watch, case number: 838 782
Technical data: Zenith cal: 143-6
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17 jewels, manual wind, chronograph, 60 s 30/45 min counter. -
Size: 14''' 31.60 mm. -
H: = 6.70 mm. -
N: = 18.000 A/h. -
Power reserve: 32 h. -
Mainspring: 1,20 x 13 - 0,16 - 400
Versions:
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143: no shock protection. -
143-1-3: no shock protection, centered 24 hour counter. -
143-6: incabloc shock protection, base cal: EP 4. -
143-6: incabloc, 12 hour counter, base cal: EP 40.