Reference
Ref. 7970
← Back to all References1972 – 1976
Calibre
431
Line
Ultra-Chron
Power
Automatic
Complication
Center Seconds, Date
Diameter (mm)
40
Lug Width (mm)
22
Case Type
Screw
Case Material
Steel
Dial Color
Black
Dial Finishing
Matte
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Notes
This reference was the inspiration for the modern Ultra-Chron diver reissue.