THANKS FOR YOUR SERVICE TO OUR GREAT COUNTRY - USA, ST MICHAEL - PATRON SAINT OF LAW ENFORCEMENT. CHALLENGE COIN - 1.75" SIZE: 1.75" CIRCLE SIDE 1: 2D DESIGN - THANKS FOR YOUR SERVICE TO OUR GREAT COUNTRY - USA. SIDE 2: 3D DESIGN - ST MICHAEL - PATRON SAINT OF LAW ENFORCEMENT. ADDITIONAL DESIGN: DIAMOND CUT ON EDGES OF BOTH SIDES.