I used a vintage 1940-50' green catalin belt buckle for the base. This truly was a rescue as the bar crossing the back was missing. Attached a 50's large black lucite button. That piece was a rescue as well. Topped it off with a 1950's blue molded rhinestone button. Measures 2 inches long and 1.5 inches wide. Regular bar pin attachment with the standard roll over clasp.