Stunning golden pendant and earrings in ancient design

These museum-quality pieces represent a god revered by early Central or South American peoples. Each piece is 1 inch by 1-1/4 inches of finely detailed gold plated brass (I believe these are the materials). The bale on the pendant will accommodate a wide chain. The earrings have a great secure design that includes both a post and a clip. Purchased in Peru, they are vintage but in very good shape, with the only issue being a bit of tarnish on the wee disc on each piece. The three backs are all signed MO. (d)