Very rare Sergio Bustamante large, eye catching sterling silver and 22 carat gold plated sun pendant, stamped Sterling, signed by Sergio, and additional ID marks, purchased at his Puerto Vallarta studio 30 years ago, somewhat similar pieces have open backings, this one is solid silver, there are many cheap copies of this artist's designs, weighs 27.4 grams, measures a full 1 5/16 inches across without the bale, the large bail will accommodate any necklace, Bustamante is a highly reguarded artist/designer and his works appreciate in price regularly so they are a good investment, pick up in Danville, no shipping, cash only.