day date serial numbers

[andyTHOM]

Hi EVERYONE WOULD APPRECIATE ANY ADVICE YOU CAN GIVE. RECENTLY BOUGHT ROLEX DAY DATE, BUT CAN FIND NO SERIAL NOS. BETWEEN LUGS. THE WATCH IS CONFIRMED AS MADE OF GOLD AND STAMPED18 K AND 750 AT THE LUGS, AND THE LETTER A IS ALO STAMPED THERE.THE BRACELET IS ALSO GOLD AND STAMPED WITH ROLEX SA. THERE IS ALSO WHAT LOOKS LIKE A LADIES HEAD, AND THE NUMBERS 5385 ON THE CLASP.THE DIAL HAS THE WORDS T SWISS MADE T, BELOW THE SIX. ANY ADVICE MOST GRATEFUL.