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

https://nova-wiki.win/index.php/How_Do_I_Avoid_Counterfeit_Payments_When_Selling_a_Rolex%3F

If you’re checking a Rolex before selling or borrowing against it in San Diego, ask a watchmaker to show you the reference number between the lugs at 6 o’clock. Don’t remove the bracelet yourself. Get a written offer and loan terms before handing it over.