Crown
The crown is the knob on the side of a watch used for winding, time-setting, and date adjustment. Rolex uses three systems: standard screw-down, Twinlock (2 gaskets) for older Submariner and Datejust, Triplock (3 gaskets) for current Submariner. Crown logo on the crown must be sharp and symmetric — a key authentication checkpoint.
Function
The crown sits at the 3 or 4 o'clock side of the case and serves to:
- Wind — adds power to the mainspring
- Set time — adjusts hour, minute, second hands
- Set date (Position 2)
- Set day-of-week (Day-Date — Position 1.5)
- Set GMT hand (GMT-Master II — Position 1.5 or 2)
Crown systems
Push-pull
Pulls straight out — used in dress watches (Calatrava, Tank). Low water resistance (30–50m).
Screw-down
Twist-locks for seal — used in sport watches. Higher water resistance (100m+), 1–3 gaskets.
Twinlock (Rolex)
Two sealed zones — gasket in crown and tube.
- Used in: Datejust, Day-Date, older Submariner (300m), GMT-Master (100m)
- Crown logo shows 2 dots below the Crown symbol
Triplock (Rolex)
Three sealed zones for deep diving.
- Used in: current Submariner (300m), Sea-Dweller, Deepsea, GMT-Master II (100m), Daytona
- Crown logo shows 3 dots below the Crown symbol
Authentication
Crown logo is one of the five spots counterfeiters miss most often:
Rolex Crown logo
- Size — about 1.6mm on modern crowns
- Symmetry — 5 crown points must be geometrically symmetric
- Sharpness — engraving must be crisp, not blurred
- Twinlock/Triplock dot spacing — 2 or 3 dots below crown must be evenly spaced
Patek Calatrava Cross
- Cross in circle, simple design
- Size and symmetry critical
AP Logo
- Stylised "AP" letters
- Used on every Royal Oak
Resale impact
Crown in good condition
- Baseline
Faded crown logo
- From heavy wear or polishing — -4 to -6%
Loose crown / broken stem
- -8 to -12% (Service Centre replaces)
Wrong-reference crown
- -12 to -18% — collector detail check finds and prices down
Aftermarket crown
- -15 to -20%
Use and care
- Never turn the crown underwater — damages gasket and lets water in
- Always screw back after time-setting — prevents gasket overdrawing
- Don't use the crown unnecessarily — gasket wears with each cycle
- Replace gasket every 5 years — part of standard service
Verification during assessment
Specialists check:
- Click feel — crisp or mushy
- Resistance — winding and setting smooth
- Visual — logo, size, symmetry
- Function test — time-set actual, watch hour/minute hands sync
Include crown photos in your six-angle LINE submission for valuation.
Sources: Rolex Twinlock/Triplock technical documentation · WatchCharts crown condition data · Watchmaker Forum Asia authentication guides