vintage chunky mottled gum ball bead necklace 60s

vintage chunky 3 strand mottled and irregular gum ball bead necklace 

likely acrylic beads & gold tone metal catch clasp

stamped JAPAN

15 3/4 inch necklace top strand length 

19 1/2 inch bottom strand length 

11/16 center bead diameter 

excellent condition, possibly last bead/catch is missing