Rolex Crown Identification on material and Design in use

The crown emblem of Rolex Crown indicated the material of the Watch made and the Type of Twinlock and or Triplock design, below the crown, there are series of “Dots”, or “Slash” as shown on the illustration.


The Rolex crown to the owner of the watch only appears to be a single knob for setting the Watch. In fact, not including the crown gasket, the crown is actually made using four parts.

There is the large crown that is used to set the time, change the date, or wind the watch, a spring, a tube that goes into the case of the watch, and the part that the stem screws into.

This part engages the small spring inside the tube of the crown. The entire crown can be taken apart. The part that attaches to the stem has two small flats that are machined into it. This part is the one that engages the spring.

Each time we service the watch, we used to replace with a new silicone O-ring of the right size, then apply some silicones grease to act as water-resistant media and at same time to act as lubrication for the shaft when we adjust it.

Most of us don't know…when we unlock the crown, like we close the screw in cover of the jar, we should rotation it half turn on anti-clockwise direction to ensure the screw threads on the crown and the gasket geared properly before we rotate it clockwise to lock it. It will reduce the wearing off of the Crown Thread, the first frontier for your Rolex Water Proof!

HK Snob