San Diego Rolex owner? Check the reference number between the lugs after...

https://wiki-stock.win/index.php/How_Do_I_Check_If_My_Rolex_Is_Original_Before_I_Sell%3F

San Diego Rolex owner? Check the reference number between the lugs after removing the bracelet, then compare offers in person. Avoid posting serial-number photos publicly, and get any loan terms in writing before handing over your watch.