Creamy Celluloid Cameo brooch features a brass setting with simple c-clasp. The brooch is a book piece and is featured in "Classic American Costume Jewelry, Vol. 2" by Jacqueline Rehmann. It measures 2 inches from top to bottom and a bit more than 1 1/2 inches wide. This is in great condition and has a delightful old patina. You will love it.