vtg 70s SARAH COVENTRY Black Charmer convertible necklace

Vintage 1976 Sarah Coventry 'Black Charmer' necklace. Necklace is convertible: triangle pendant clips off and can be worn as a brooch, hanging bead pendant can be worn on the brooch or the beaded necklace, the necklace can be worn alone. Each piece has spring rings for adaptability. Approx 29" long (beads only). The pendant is approx 3 5/8" long. Very good condition.