Rolex 16523 Zenith Daytona Cosmograph 18K Yellow Gold / SS NEW OLD STOCK (32872)

32872 Rolex 16523 Cosmograph Daytona, stainless steel and 18K yellow gold on a stainless steel and 18K yellow gold Oyster bracelet, Rolex modified Zenith El Primero automatic chronograph movement, white dial, chronograph subdials with black surrounds and rare "inverted 6" in the hour counter, sapphire crystal, water resistant to 100 meters, S series (1993), diameter: 40mm, thickness: 12.5mm. New Old Stock condition with Rolex box, hang-tags, instruction booklets and warranty papers which are not dated.


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More about Rolex 16523 Zenith Daytona Cosmograph 18K Yellow Gold / SS NEW OLD STOCK

This is a stainless steel/18K yellow gold Rolex Cosmograph Daytona, 16523. It has an integral stainless steel and 18k yellow gold Oyster bracelet, a scratch resistant sapphire crystal, and round chronograph pushbuttons. The screwed-down Triplock winding crown is protected by the crown guard, and the 40mm diameter solid three-body case, screwed down solid case back, Oyster bracelet and crowns are polished/brushed. The dial is white with luminescent baton hands, faceted luminescent "boat shaped" baton hour index markers, a central sweep chronograph hand, and an outer minute track. There is a tachometer graduation on the gold bezel to 400 units per hour. It has a subsidiary dial for the small seconds at the 9 o'clock position, a 12-hour sub dial at 6 o'clock with rare "inverted 6", and a 30-minute register at 3 o'clock. It's water resistant to 100 meters/330 feet, and the 12mm thick case, dial, and movement are all signed.

This Rolex Daytona Cosmograph Daytona 16523 has an automatic self-winding Zenith El Primero caliber 4030 movement. It's rhodium-plated, with oeil-de-perdrix embellishment. It's constructed with 31 jewels, a blue Parachrom hairspring, an Incabloc shock absorber device, and a straight-line lever escapement. It includes a monometallic balance that's adjusted to temperatures and 5 positions, a self-compensating free-sprung Breguet balance spring, and Microstella regulating screws. The mechanism oscillates at a frequency of 36,000 vph (5Hz).

In 1963 Rolex introduced the Cosmograph Daytona, the chronograph that was a professional instrument for endurance racing drivers, with a tachymetric scale for measuring average speed on the bezel, and a cluster of subials that were reminiscent of a Ferrari dashboard. In 2000, they debuted this evolved 4130 caliber movement which was made with only 289 different parts. This is an updated N Series model, produced in 1991.