IWC 64T (12''')
Serial number: 661 358 (aprox: 1915).
Data: cal: 64T (12''').
-
15 Jewels, manual wind, stem wind and set, savoenette / wristwatch caliber. -
Size: 12''' = 26.5 mm. -
H: = 4.1 mm. -
N: = 18.000, Compensating balance with breguet hairspring. -
Power reserve: 30 h.
Versions:
-
63: Open face caliber, stem wind, lever set. -
63T: Open face caliber, stem wind and set. -
64: Savonette caliber, stem wind, lever set. -
64T: Savonette caliber, stem wind and set.