Three Pre-Columbian Mexican Amulets, a) a ceramic frog, possibly Aztec, attached to irregularly beaded string, with collection tag “As found by D.J. Blout + restrung 1937 att- Jaliscoâ€, b) a greenstone pendant of avian form, abstract symmetrical design, attached to inlaid beads c) an ovoid pierced greenstone pendant with linear designs Lengths: 1 1/2-3 1/2"