I'm delighted to offer these Antonio Pineda concave cuff links. 1/2" square and rises just over 1/4". Turn lever attachments that work perfectly. These links have been loved and worn, tiny dings on both side edges. Your jeweler can buff these out or wear as is. The price reflects what it will cost to make them smooth. Acid tests as above 950. Marked with the Antonio Taxco crown and an eagle mark that I think is 15. Both marks are inside the shanks. Seldom found.