Gorgeous sterling Trifari brooch is a patented design, as seen in design patent number 137,541 granted on March 28, 1944. This iconic retro modern brooch, featuring a very large bow with central imitation golden topaz stone, is very typical of the brooches made during WW II when supplies were rationed or simply unavailable. War Protection Board orders prohibited the use of many metals for use in jewelry making which gave rise to the use of sterling silver and other non-metal materials such as wood and plastics. Some companies dedicated their efforts to manufacturing war supplies; Coro gave up about 80% of their jewelry-making facilities to the war effort. Nevertheless, the desire for personal adornment continued and women wanted jewelry and hats; they also became extremely clever with re-making last years fashions into something new and fresh. Scrolled metal designs with a spare use of rhinestones were typical designs in jewelry and this is an excellent example from that time period. This has a gold wash over silver and is signed 'Trifari 'and 'Sterling' as shown. This is huge, measuring 3 1/2 inches wide by two inches from top to bottom. Lovely design from one of the best!