Genuine Rolex engravings are deep and precise with fine lines. Counterfeit numbers often appear shallow, faint, or "sandy".

The X-Factor

This is the most critical question. According to official Rolex serial number charts (corroborated by decades of archival data from forums like The Rolex Forums (TRF) and Bob’s Watches), the .

You must remove the bracelet to find it.

For a watch from the "X" serial era, collectors look for specific matching components:

To verify if your watch is an "X" serial, you must locate the engraving on the watch case. Because these watches were produced before 2005, the serial number is not on the inner bezel (rehaut) but rather hidden between the lugs.