Vintage Castelan Mexican sterling silver twisted rope necklace and earrings with Eagle mark 15 which would date the set to between 1955 to 1970's.
The twisted rope necklace is 18 inches long by 1/4 inch wide with a box clasp which is marked on the back Castelan in script, Sterling 925, Heucho en Mexico and the Eagle mark 15. The matching screw back earrings are 1 inch long by 1/4 inch wide and are unmarked but could probably be converted to studs if so desired. The well made necklace weighs 51 grams and the earrings weigh 9.4 grams.
This vintage circa 1960 Castelan twisted rope necklace and earrings set is in excellent vintage condition and is suitable for day or evening wear.