The Wittnauer manual-winding chronograph Ref. 3256, produced in the 1960s, features the Landeron-based Caliber 14Y and a unique chronograph stopwatch at 4 o'clock. 1960s Ref.3256 17 jewels Cal.14Y (Landeron 248 base) Manual windingThe Wittnauer manual-winding chronograph Ref.
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