Vintage Knotted Graduated Jade Bead Necklace with 18k Yellow Gold Clasp

Vintage fully knotted, graduated jade bead necklace with a large 18k yellow gold clasp.  ID#: NEC571 Jade: Forty-five (45) round polished jade beads measuring approximately 9.0-14.1mm each in diameter Metal: 18k yellow gold  Length: 20"  Weight: 71.8g Markings: 'Caplain Paris' '750', French eagle's head hallmark