This is a gorgeous Mexican sterling necklace by Los Castillo, c. 1950s. The necklace has a wearable length of 15" and is 7/8" wide. It is in excellent condition with a nice patina. Four of the balls in the centers of the links have teeny indentations, but these do not detract at all. The necklace is signed (see close up) and has a nice tight clasp.