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Rolex Vintage Daytona Cosmograph – Ref. 6263 – Stainless Steel – Sigma Tritium Dial – Black Bakelite Bezel – 1975 – Rolex Service Letter 2025

We are pleased to offer this exceptional Rolex Daytona Cosmograph Reference 6263, a highly collectible vintage example from 1975, featuring the desirable Sigma tritium dial and the original black Bakelite bezel. This reference represents one of the most celebrated manual-wind Daytonas ever produced and remains a cornerstone for serious vintage Rolex collectors.

The rare Sigma dial, distinguished by the “σ T SWISS T σ” signature at 6 o’clock, signifies the use of gold for the applied indices—an important and sought-after detail in vintage Rolex scholarship. All the tritium plots have aged to a pleasing patina, matching the warmth of the original hands and giving the dial the rich, honest vintage presence collectors value. The dial does not test have any DAYTONA writing and therefore a prerunner of the later Big Red daytona. Rare!

Inside beats the venerable Rolex Caliber 727, the upgraded high-beat evolution of the Valjoux-based movement known for its precision, reliability, and importance in Daytona history.

This piece is accompanied by a Rolex Letter dated 2025, offering peace of mind and confirming the watch originally. Service wasn't neccerssary and not done! The fitted Oyster bracelet is an A-number dating perfectly with 1975/76!

“This quite rare Reference 6263 is a pillar of vintage Rolex collecting — its Sigma tritium dial, Bakelite bezel, and manual-wind heritage place it among the most iconic chronographs of the 20th century. This 1975 example, supported by a 2025 Rolex letter, represents a rare and outstanding opportunity for the discerning collector.”