Rolex Cosmograph Daytona

  • Movement 
  • Year of manufacture 
  • Lot number 
  • Diameter 
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ROLEX REF. 6103, CHRONOMETER STEEL Rolex, "Oyster Perpetual, Officially Certified Chronometer," case No. 748710, Ref. 6103. Made circa 1958. Fine and rare, center seconds, self-winding, waterresistant, stainless steel Chronometer wristwatch. Three-body, solid, polished and brushed, screwdown case back, Super Oyster winding crown, engine-turned bezel. Off white with applied steel faceted dart indexes and luminous dots, outer 1/5th seconds track. Luminous steel feuille hands. Cal. Cal. A.296, rhodium-plated, 18 jewels straight line lever escapement, monometallic balance, shock absorber, self-compensating blued steel Breguet balance spring, index regulator.