If you’re checking a Rolex before selling or borrowing against it, don’t remove...

https://johnathanrcpw248.wpsuo.com/what-counts-as-a-complete-set-for-a-rolex-sale

If you’re checking a Rolex before selling or borrowing against it, don’t remove the bracelet just to find the reference number. On many models, it’s engraved between the lugs at 12 o’clock, and a watchmaker can check it safely