Silver 4 Leaf Clover Punch-Out Stencil Studs

Purchased from a jewelry cart in Italy, on a Siena hillside. Not real silver but good quality metal. I've had since 2010, they have have not tarnished or gotten dirty, never worn. They have the design, which is a 4 leaf clover/ 4 sided club (in the card suits). Stamped out of a silver, flat nail head looking stud. All even and flat.. back post was either glued or welded. All sturdy, well constructed.