Rolex Daytona Zenith Black Dial 16520

An excellent condition pre-owned 40mm case size, stainless steel superlative chronometer, calibre 4030, automatic movement Rolex 'Zenith' Daytona (16520) featuring a black baton 'patrizzi' dial with black sub-dials surrounded by a stainless steel units per hour bezel on a full retail length stainless steel Rolex Oyster bracelet. 

The Rolex Daytona has long been one of the most desirable chronographs in production, which is funny for a model that was initially off to a slow sales start! While early Daytona models were always undergoing changes to reference numbers and dial configurations - the one thing they had in common was their manually wound movements. Every Daytona variant was based on the iconic Valjoux 72 chronograph, until 1988. That was when Rolex borrowed another iconic calibre to upgrade the model from manually wound to automatic. That movement? The Zenith El Primero.

Rolex decided to outsource for their movement in this reference using the Zenith 400 movement originally manufactured for the Zenith “El-Primero.” They used this movement as the basis and then fortified it, performing approximately 200 modifications to the base movement to meet the expectations prestigious of the brand. This created the workhorse Rolex 4030 movement that was put in production for an era of 12 years. In this reference, Rolex also incorporated the more resilient sapphire crystals, a contributing factor to the increased depth rating guaranteed at 100m or 330ft.

This watch has been serviced in 2019.