If you’re checking a Rolex in San Diego, the reference number is between the...

https://iris-wiki.win/index.php/How_Do_Buyers_Grade_Rolex_Condition_When_Making_an_Offer%3F

If you’re checking a Rolex in San Diego, the reference number is between the lugs at 12 o’clock. Don’t force the bracelet off. Have a watchmaker verify the watch, and meet in a staffed, secure place for any sale or loan.