VTG. lot of Clip-on Earrings (2) Pair One signed ART

Two pairs of clip-on vintage earrings Gold tone pair with purple and faux pearls is signed ART on backside Other silver tone is not signed Looks like a coin replica of some kind?? Says REPUBLICA PURIQUESA around both Unsure of the spelling, it’s unclear Also, plastic white cushion piece is missing from the coin pair-see last photo