Turquoise Anne Klein vintage leather thin belt

Turquoise Anne Klein vintage half inch wide leather belt, size medium, gold Anne Klein logo buckle, 32 1/2 inch in length. My mother used to be the seamstress at a fancy dress shop in the early 1980s. She purchased these belts at this dress shop and is cleaning out her closet and allowed me to list them on Poshmark. I have conditioned all leather & reptile skin belts with Angelus leather cleaner and conditioner but cannot ensure that the skin is not brittle because they 30+ years old.