Stunning book chain and glass medallion body jewelry necklace with back closure. This is a really rare piece and is in very good condition and wearable. Age is shown and it dates from the end of the teens into the 1920s. The piece reflects the design choices of the time, but could also have been a theater element as well. Appears to be brass stamped links. The necklace halter is unsigned and the clasp “hook” could be a replacement. Overall one of the most interesting examples. Best size fit around an S / M, but there could be adjustability to the links or chain that could be added to the neck to increase sizing. Excellent. One minor flea bite to the medallion. Tarnish. Offers considered.