Gent's 18K Yellow Gold 36mm Patek Philippe Ref # 3970 "Perpetual Calendar" Mechanical Chronograph Item #: CT42504 Brand: Patek Philippe Model: Perpetual Calendar Reference No: 3970EJ-014 Gender: Gent’s Movement: Handmade Swiss Mechanical(Manual-winding) Movement (Caliber CH27-70 Q)- Visible Through Sapphire Exhibition Caseback.
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