Omega Speedmaster Professional Moonwatch Co-Axial Master Chronometer (Ref. 310.30.42.50.01.002) – Full Set

Up for auction is one of the world’s most iconic timepieces: The Omega Speedmaster Professional Moonwatch, featuring the highly desirable sapphire crystal caseback (Reference 310.30.42.50.01.002). Inspired by the 4th generation Speedmaster style worn on the moon, this model represents the perfect bridge between historic NASA heritage and modern mechanical perfection. With its open caseback, this version offers a stunning, unobstructed view of Omega's masterfully finished chronograph movement.

Product Highlights:

• Sapphire Sandwich: Equipped with a scratch-resistant sapphire crystal on the front and an exhibition sapphire caseback on the reverse.
• Master Chronometer Certified: Tested and certified by METAS at the highest industry standards for precision, performance, and magnetic resistance.
• Anti-Magnetic Power: Completely unaffected by magnetic fields up to 15,000 gauss, ensuring flawless timekeeping in modern environments.
• Asymmetrical Case & "Dot over 90": Authentic 42mm heritage case featuring the famous "Dot over 90" (DON) on the anodized aluminum bezel ring.
• Ergonomic Bracelet: Modern, brushed five-arched-links-per-row steel bracelet with a polished clasp and comfort micro-adjustment.
• Co-Axial Calibre 3861: The legendary manual-winding chronograph movement upgraded with a Co-Axial escapement and a 50-hour power reserve.

Technical Specifications:

• Brand: Omega
• Reference: 310.30.42.50.01.002
• Model: Speedmaster Professional Moonwatch "Sapphire Sandwich"
• Case Diameter: 42 mm
• Material: Stainless Steel
• Dial: Black step dial with applied Omega logo
• Water Resistance: 50 meters (167 feet)