XIR211921 Zapotec pectoral in the form of a mask representing the bat god, Piquete Zina, from Monte Alban, Oaxaca (jade) and an Olmec necklace made from 90 gourd shaped beads, from La Venta, Tabasco (slate) by Pre-Columbian; Museo Nacional de Antropologia, Mexico City, Mexico; (add.info.: large Zapoteque pectoral in the shape of a mask representing the bat god; Olmeque necklace of ninety grains in the shape of calabas;); South American, out of copyright.