Vtg Swank Hickok name Paul oval square bowling cufflinks gold silver tone

vintage swank monogrammed Paul in gold tone over silver tone oval cufflink. plus gold tone bowling pin and ball square shaped cufflinks. I don't know what kind of metal these are. They may have scuffs due to being vintage. No major apparent damage. The pillbox isn't included. I think the bowling cufflinks is branded by Hickok, but there's no engraving on it so I wouldn't count on it. The greenish barnicle like residue attached on the cufflinks are like that of vintage items found from the titanic.