Case material: Steel; Charge: Automatic; Conditions: New Presentation condition : With boxes and all papers; Price on request Gmtbroker Reference: 5960/1A-001 Patek Philippe 5960 Stainless Steel Silvery Opaline Dial Annual Calendar Chronograph in Stainless Steel A totally new Patek Philippe chronograph: the long awaited first ever Patek Philippe self winding Annual Calendar Chronograph introduced in Stainless Steel. - Mechanical self-winding movement - Caliber CH 28-520 IRM QA 24H - Annual Calendar - Chronograph - 60-minute and 12-hour mono counter - Day, date and month in apertures - Silvery opaline dial with blackened gold applied hour markers - Steel bracelet with fold-over clasp - Sapphire-crystal case back - Water resistant to 30 m - Steel - Case diameter: 40.5 mm Also known as: Patek 5960/1A-001, Patek Philippe 5960/1A-001, 59601A001, 5960-1A-001, 5960/1A001, 59601A-001, 5960 1A 001