Semper Fi Pin. Beautifully crafted with jeweler's metal, hand-filled Marine Corps red enamel color with the letters individually raised and polished to a bold, gold shine. This is a Marine Corps symbol, semper fidelis; standing for the brotherhood and bond of the United States Marine Corps. This pin makes a special gift for your favorite Marine or a large group. Distribute at military events, parades and holidays. This can be attached to a uniform lapel, lanyard, hat or bag strap. It is especially secure with dual standard clutch backs. Each are individually poly bagged.