Unusual Crown Trifari Figural deals Glass Sea Shell Vintage Signed White

Up for sale is a vintage hard to find signed Crown Trifari figural brooch in the shape of a sea shell. It is small and I believe it to be molded glass however it could be lucite or enamel. Measures 1.5” long and 0.75” wide. Signed on the reverse side. I believe the deals metal is gold plate. It is a quality piece of jewelry. Excellent vintage condition.