
Are you a devoted Rolex enthusiast, proudly owning one or more of its iconic timepieces? Or perhaps you simply admire the brand and secretly hope to one day acquire a watch with the crown at 12 o’clock? Maybe you’re a watch lover in general, always curious to learn more about the fascinating world of horology? Whichever group you belong to, chances are there are a few details about Rolex watches that have escaped your attention—details that actually matter. Here are five worth knowing…
1. What do the dots on a Rolex crown mean?
If you look closely, just below the embossed symbol on the crown, you’ll notice some raised markings—either dots or a dash. These markings indicate the type of crown: one dot, two dots, or a dash signifies a Twinlock crown; three dots signify a Triplock crown.
The size of the dots also reveals the material the crown is made from.






2. What is Oystersteel? Is it different from the 904 L steel Rolex used to use?L που χρησιμοποιούσε μέχρι πρόσφατα η Rolex;
No, it’s the same steel. Rolex simply rebranded it as “Oystersteel” to emphasize that it is a special high-performance alloy exclusive to the brand. This superalloy is extremely corrosion-resistant and can be polished to a brilliant shine.

3. What is the Ringlock system?
It’s a patented case architecture developed by Rolex to allow the Rolex Deepsea to withstand the immense pressure at 3,900 meters underwater. It consists of three main elements:
A domed 5.5 mm thick sapphire crystal
A compression ring made of a high-tech nitrogen-alloyed stainless steel, fitted inside the middle case
A Grade 5 titanium case back with an outer ring made of Oystersteel

4. What is the Parachrom hairspring and why is it special?
It’s Rolex’s proprietary blue hairspring, introduced in 2000 and made from a niobium-zirconium alloy. It offers exceptional resistance to magnetic fields, remarkable thermal stability, and is 10 times more precise than traditional hairsprings when subjected to shocks.

5. Does the tiny crown between “Swiss” and “Made” on some Rolex dials mean anything?
Yes. That small Rolex crown nestled between the words Swiss Made on the dial signifies that the watch is equipped with a new-generation Rolex movement









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