I cannot find the little screwdriver for this but assume any small screwdriver with work. This belonged to my grandmother, I received some of her jewelry and bags when she went into assisted living. I don’t have any information on this and don’t know anything about the brand or style, other than a friend telling me it’s called a love bracelet. It has what I would call normal wear - it’s not shiny, it has some scuff marks, but no deep scratches. I tried to show the worst of it in the images.