Discovering the Watch Crown: The Command Centre in Timekeeping and More

Almost every modern wristwatch owes its reliable functionality to the crown - a small but mighty control component that winds the mainspring, sets the time, and operates common complications like dates, calendars, and Greenwich Mean Time (GMTs). Prior to the mid-19th century, it was common to insert separate keys into the caseback or dial of the watch to perform such functions. The crown rendered this system archaic, as it integrated these controls into the side of the case via a stem and crown system for easier, more seamless operation.

The crown operates similarly to a manual transmission in a car, in which the user interacts with a knob to control different watch functions. Meanwhile, the stem, a narrow rod connected to the crown, interacts with different gears based on its position. Winding, setting dates and times, and changing the day of the week are all facilitated by this mechanism, enabling watches to thrive independently of external tools.

This historical and technical exploration of the watch crown underscores the major role Philippe’s design played in horology. Placed alongside horological milestones like the development of the mainspring, balance wheel and lever escapement, his design made crowns the unsung heroes of watchmaking.