Rolex Daytona 'Zenith' Gilt A17As such as this example

A17As such as this example were produced with the MIL-W-6433A specification number which aids in identifying them from being produced starting in 1956

This two register beauty has so many desirable elements to it

This jumbo steel Omega embodies what we love about vintage watches here at analog/shift

and full-body winding rotor

an increase of 100m over the rating of the 1680) and a higher beat movement

Rolex Daytona 'Zenith' Gilt A17As such as this exampleWe all know the Daytona Story, and it has proven to be a big favorite among the collectors. Why? Rolex's brilliant motorsports chronograph is in pole position in any category, vintage or modern. And while current automatic versions admittedly don't generally do as much for us as a nice hand cranking example, this particular iteration might be the exception to the rule. The timepiece you're looking at is a Reference 16520 Cosmograph, known among