Vintage Sterling Silver Turquoise Cuff

My mom proudly wore this cuff in the 70’s and 80’s. It looks handmade and not manufactured. In EUC, especially for being used and it’s age. Approximately 4 1/2” from end to end. It looks like there are etched K.S initials, not sure what they represent. See information picture included “N.E. from Niels Erik. From smoke and pet free home.