Western engraved tooling in the metal, copper and green aged-look patina with 8 raised copper stars around the outside, scallops-and-points shape. Antique finish with a bit of sheen; not much.  This concho is 1" in diameter and about 1/2" deep including the Chicago screw.  Consistent from piece to piece, very well made and heavy for its size. $5.50 per concho.