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

https://technivorz.com/can-i-sell-a-rolex-without-papers-and-still-get-a-fair-offer/

If you’re checking a Rolex before selling or borrowing against it, don’t remove the bracelet yourself. On many models, the reference number is engraved between the lugs at 12 o’clock. Have a local watchmaker verify it, and get any offer in writing.