If you’re checking a Rolex before selling or borrowing in San Diego, the...

https://tango-wiki.win/index.php/If_I_Borrow_Against_My_Rolex,_Do_I_Still_Own_It%3F

If you’re checking a Rolex before selling or borrowing in San Diego, the reference number is engraved between the lugs, under the bracelet. Don’t force it off. Have a watchmaker inspect the watch, and get any loan terms in writing before handing it over.