Something Special
Shifting his focus onto the watch itself, Peter points out that this Rolex Cosmograph is an Oyster variant. This model was most notably characterized by its side-mounted screw-down buttons. Peter carefully takes in every detail of the watch, explaining to the audience and David, as he goes.
Only Two Styles
The Oyster was produced in two styles, one did not sport the screw-down buttons, thereby neatly making it waterproof. This feature of the variant of the Cosmograph made the style very popular among outdoor-type people, especially military personnel.