A stunning and rare necklace in black Talosel, coral, cabochons and rhinestones, signed Henry

Rare antique necklace in black talosel (resin) with glass cabochons and colored rhinestones, the motifs alternate with strands of red coral and turquoise glass rings. Features a typical hook clasp by the designer and a round tag with his signature. Very good condition, see photos.
Open length 49 cm
Talosel pattern length approximately 4 cm.