Finely detailed vintage cameo & sparkling bar brooch both signed Sphinx

Sphinx was an English firm that created high quality costume jewelry for about 50 years beginning in 1948. They produced pieces for numerous renowned stores and brands including Kenneth Jay Lane, Saks 5th Ave., Neiman Marcus, and Bloomingdale’s. The company was especially good at making pieces look like real gems. In the case of cameos, they succeeded in making celluloid or resin look like carved shell, with no two pieces looking exactly alike. The cameo brooch is set in gold metal, with a twisted design framing the cameo. It is marked Sphinx and, below, a model number which I can't quite make out. Measures 1-2/3 by 1-1/4 inches. In great shape, with all details still sharp. I am including a rhinestone and baguette bar brooch by Sphinx. It measures 2 inches in diameter and has real radiance. It is in very good shape, though if you look at it from the side, it's not perfectly straight. There's also dark mark on the back. Neither is visible when the brooch is worn.