Tudor Oysterdate Big Block

Pre-Owned in very good condition. Includes box and undated papers, as well as service papers dated July 2016.

The Tudor Prince Oysterdate Chronograph Ref. 79170 is one of the brand’s most collectible vintage chronographs, combining classic motorsport styling with the robust reliability of the automatic Valjoux 7750 movement. Produced during the early 1990s, this 40mm stainless steel model is often referred to as a “Big Block” due to its thicker case design, a result of housing one of the earliest automatic chronograph movements. The striking silver dial, paired with contrasting chronograph registers and a date display at 3 o’clock, delivers a timeless look that reflects Tudor’s close historical connection to Rolex sports watches.

Highly regarded by collectors, the 79170 offers vintage charm, everyday wearability, and an important place in Tudor’s chronograph history. Features such as the rotating 12-hour bezel, Oyster-style case construction, and period-correct details make it a standout example from an era when Tudor shared many design elements with its famous sister brand. Whether added to a growing collection or worn as a distinctive daily chronograph, the Prince Oysterdate 79170 remains a sought-after classic with enduring appeal.

Reference Number: M79170

• Case: 40mm in stainless steel
  
  
• Bezel: Bidirectional Rotating aluminum insert 
  
  
• Dial: Sunburst silver with black subdials
  
  
• Crystal: Domed Acrylic
  
  
• Movement:  ETA Valjoux Calibre 7750
  
  • Automatic, self-winding movement
  • 45 hour power reserve
    
  • Quickset date 
  • Chronograph function
  • COSC Certified
    
    
• Water Resistance: 30 meters
  
  
• Bracelet: Stainless steel with folding clasp 
  
  
• Box and Papers: Includes box and undated papers, as well as service papers dated July 2016.