Early Chronographs (pre-Daytona)

Rolex’s hand-woundManual windingWinding a mechanical watch’s mainspring by turning the crown. Some automatic movements also allow manual winding. chronographsChronographA watch function for starting, stopping and resetting an elapsed-time measurement independently of the ordinary time display. from the late 1930s to 1962, before the Daytona line: the first Oyster chronographChronographA watch function for starting, stopping and resetting an elapsed-time measurement independently of the ordinary time display. (3525), the Antimagnetic references, the one-off split-secondsSplit-seconds chronographA chronograph with two superimposed timing hands. One can be stopped to read an intermediate time while the other continues; releasing the stopped hand makes it catch up and run together with the other again. This allows comparison of events that start together. 4113, the 6034 that set the three-register template, and the triple-calendarComplete calendarA calendar displaying the day of the week, date and month. It needs manual correction after months shorter than 31 days because it does not automatically account for their different lengths. Often accompanied by a moon-phase display, which is a separate indication. Also called a full or triple calendar. Dato-Compax series. The 6234 and 6238 are in the Daytona family.