Challenge Coin Display - Holds Medals and Coins up to 1 3/4" QUALITY: A brilliant, quality display frame that highlights your coins or medals COIN SIZE: Excellent fit for 1 3/4 inch coins and medals, for thickness of coins up to 4 mm (SEE SIZE CHART TO SEE OPENING SIZES & MEASURE COINS) DISPLAY SIZE: Self-standing frame, that allows for a sleek, clean look; actual size of frame is 3 1/2 SIMPLE: No tools required, held together by 4 powerful magnets, easily open and insert your medallion or coin