This is an Art Deco Czech necklace - similar to the ones on page 100/101 of Sibylle Jargstorf's book 'Baubles, Buttons and Beads' - Schiffer. This one has mottled green beads and white metal findings. It has an elaborate front piece - which is also the fastening. Two green beads hang down on chains. It does up at the back with a metal hook. (See pictures) It measures - round the neck - about 16 inches. It is in overall good condition - but of course the surface of the metal has aged. Ref: 3097 C51/39