Button Works Standard California Button Works half dollar concho rubber. The front features an eagle, and the back features Kennedy. Concho size: Approximately 30mm The rubber is black, the beads are blue, and the leather cord is pink. It can be used as a bracelet, hair tie, or to bundle things. Unused item stored at home, but please refrain from purchasing if you are sensitive to used items. Button Works, Standard California, Standard California Button Works, Jackson Matisse, Ron Herman