Challenge and Award Coins
Challenge coins are generally collected and displayed. Made of a metal and either 3D engraved or surface engraved. They can be stainless steel, brass, copper or aluminum. 25.4mm (1"), 40mm (1.57"), 50mm (1.97") and some larger.
Award coins are given for achievements and are displayed with pride or carried in a pocket to quickly produce for bragging rights. These come in the same metals and sizes as the Challenge Coins.