Vintage Martha Sleeper Bakelite Drum Brooch Sweetheart Jewelry BOOK PIECESo bright and colorful is this vintage bakelite brooch in the form of a field drum with drumsticks, attributed to Martha Sleeper, circa 1940s. The vivid Art Deco novelty pin is patriotic "Sweetheart" jewelry, and appears in the book, The Bakelite Collection by Berkholz, under the collection of U. S. WWII jewelry. The brooch itself consists of a Bakelite half drum which has oxidized over to time to colors of coral red and marbled yellow, and also has