Set of 3 pearl necklaces,

Bundle of 3 pearl necklaces, Fresh Water cultured pearls, partly coloured, of which 1x 3 rows of drops, rosé, with magnetic clasp of silver, L: 50 cm, 1x yellow pearls ca. 11 mm with bayonet changing clasp in one pearl, L: 52 cm, amd 1x 8 rows of pearl mixture, silver mounted with turquoise changing clasp of ray skin, L: 55 cm, late 20th century, partly signs of wear.