Rolex Daytona 16520 c. 1989 "Floating Cosmograph" Dial RARE

More about Daytona 16520 c. 1989 "Floating Cosmograph" Dial RARE

This is a stainless-steel Rolex Daytona “Floating Cosmograph” Daytona 16520. It includes an integral 78390 stainless-steel bracelet with 503 end links, a double deployment M9 clasp, and a scratch resistant sapphire crystal. There is a signed screw down Triplock winding crown protected by shoulder crown guards, and there are screw-down round chronograph pushbuttons. It has a screw-down solid case back, and the 40mm diameter solid three-body monobloc case, integral hooded lugs, link bracelet, and wide fixed 225 bezel with a black tachymeter scale to 400 UPH are polished/brushed. The dial is rare white porcelain with black-rimmed “compax” subsidiary dials with white Arabic numerals and stainless-steel indicator hands, including a small constant running seconds dial at 9 o’clock, a 12-hour chronograph totalizer at 6 o’clock with an upside-down 6, and there is a 30-minute chronograph counter at the 3 o’clock position. It has applied luminous "boat" baton white gold hour index markers, luminous white gold baton hands, and a center sweep chronograph second hand with an arrow pointer. Around the perimeter is a minute/one-fifth seconds scale and it has a Certified Official Superlative Chronometer (COSC) rating. It's water resistant to 100 meters/330 feet, it has a 40-hour power reserve at full winding, and the 12mm thick case, dial, and movement are all signed. This Rolex Daytona “Floating Cosmograph” Daytona 16520 has a 1989 automatic self-winding Zenith El Primero caliber 4030 movement. It's rhodium-plated, with oeil-de-perdrix embellishment, and 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). This watch was produced 1989 and the word “Cosmograph” is detached from the rest of the text, thus it’s known as “floating.”

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