1991 Rolex Two-Tone Zenith Daytona (Ref. 16523) Black Mk. III "Inverted 6" Dial W/ Box, Papers, & Original Sales Receipt

$ 31,500

First introduced in 1963 the Rolex Daytona has remained a sought-after stable within the Rolex product range. Designed with professional racecar drivers in mind, the Daytona’s precision chronograph and tachymeter bezel allowed drivers to accurately measure speeds up to 400 kilometers or miles per hour. The release of the Daytona came just after Rolex had become the official timekeeper of the Daytona racetrack and the name evolved as a way for the brand to highlight its connection to the celebrated race.

Early Daytona models featured a manual-wind Valjoux 72-based column-wheel chronograph movement. This was in use until 1988 when Rolex released the ref. 16520 with an automatic “self-winding” movement. Rolex outsourced this moment, utilizing the Zenith 400 movement, originally manufactured for the “Zenith El-Primero.” For use in the ref. 16520, Rolex required approximately 200 modifications to the Zenith movement, which remained in use for twelve years. As a result, Daytonas from this period are commonly referred to as “Zenith Daytonas.” In this reference, Rolex also incorporated more durable sapphire crystals, helping to increase the depth rating to a guaranteed 100m or 330ft.

This incredible two-tone Rolex Daytona ref. 16523 is a true time capsule, remaining in exceptional condition throughout and accompanied by its original boxes, papers, accessories, and original sales receipt. 

Stock # RLXDT16520TT-2
Brand Rolex
Style "Zenith" Daytona
Model 16523
Serial N4XXXXX
Size Men's
Material Stainless Steel / 18K Yellow Gold
Dial Black "Mk. III"
Millimeters 40
Bracelet Rolex Oyster 78393 Bracelet W/ 403 End Pieces



The strong case displays crisp angles and sharp finishing with minimal signs of previous polishing present and gentle signs of use shown. The 18k yellow gold "Units Per Hour" bezel is in excellent condition with minimal signs of use present. The case retains its original yellow gold Rolex trip-lock crown and screw-down pushers. The Rolex stainless steel and 18K yellow gold 78393 Oyster bracelet with 403 end pieces retains 13 links that show minimal stretch and will fit up to a 7 1/4-inch wrist.


The original Mk. III black "inverted 6" dial is in virtually perfect condition, showing no damage or notable age. The tritium lume plots feature a lovely creamy patina with no degradation present under UV light inspection. The original tritium hands match the dial and show no degradation under U.V. light inspection.


The watch comes complete with its original inner and outer boxes, Rolex guarantee paper, original sales receipt, both hangtags, leather Rolex notebook with an additional internal paper book, booklets, and polishing cloth. The watch is keeping time perfectly, backed by a 1-year warranty on accurate timekeeping.

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