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Stock # SKU21078
Stock # 21078
Model Name Cosmograph Daytona
Brand Rolex
Model Ref # 6240
Condition Mint
Gender Mens
Movement Manual
Case Stainless Steel
Case Shape Round
Case Size 38mm
Band / Strap Bracelet
Dial Black
Caseback Solid
Complications Chronograph
Year 1966
Additional Information
The reference 6240 Cosmograph Daytona is the first Rolex chronograph to feature screw down chronograph pushers. Significantly, this watch still has its original first series pushers. It is not a given, as many 6240s have had their original chronograph pushers replaced. As such, this is an important and highly collectable vintage Rolex.

Original stainless steel case measures 38mm diameter by 14mm thick. Original bezel still features sharp factory edge. Original bezel insert features “Units per Hour” scale from ‘50’ to ‘200’. The screw down crown and screw down chronograph pushers all work perfectly, and the chronograph hands reset crisply to their zero positions. The lugs are symmetrical and uniform with sharp edges. Serial number 1439XXX dates production to 1966. Inner case back has ‘6240’.

Original black dial with applied hour markers and original hands. The sub dials provide 30 minute and 12 hour chronograph totalizers and constant seconds. The silver sub dials are sunken and have concentric guilloche.

Original movement is the manual winding Rolex Caliber 722 with 17 jewels. The Caliber 722 was the first Rolex chronograph movement to feature the Microstella regulation system. The movement features column wheel construction and is clean and in excellent working order.

Bracelet is a Rolex Oyster heavy link reference 78350.
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