Darling vintage copper Aztec turtle pin signed Copper by Bell. Bell Trading Post was founded in Albuquerque, New Mexico in 1932 by Jack Michelson and his wife Mildred. They sold southwest style jewelry at various tourist locations in the United States.  The mark on this pin is the “Arrow post hanging bell sign” and was first used in 1961.  Measures 1 1/4" x 1 1/2"