Oris Williams F1 Chronograph Automatic Ref. 7563 – 45mm Black PVD Steel – Swiss Valjoux 7750. Reference: 7563. Strap: Original Oris black rubber strap with signed Oris clasp. Powering the watch is Oris’s automatic chronograph caliber based on theETA / Valjoux 7750, visible through the sapphire display caseback.
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