Such a lovely little pin! This handmade piece is stamped "Peru", "925" (silver), and "OV" on the back. I am not certain if OV signifies the initials of the artist or something else, but this piece closely resembles the work of Graciella Laffi from the 1950s-60s, combining Pre-Columbian inspiration with a modernist sensibility.
I applied silver polish to the front of this pin and it shines brightly! Overall good vintage condition, with very light scratching/denting. it measures 1 1/4" wide x 1 1/8" tall x 1/4" deep.