This necklace, featuring a thunderbird motif, was produced by the Bell Trading Post company in Albuquerque, New Mexico, from the 1930s to the 1960s. Purchased in New Mexico in the 1970s and kept at home since then. Features: Represents the design of the Native American Navajo tribe. The thunderbird, appearing in Native American legends, symbolizes strong leadership. Material: Solid copper (stamped "solid copper" on the back of the pendant).