Size: 2 1/2x2 1/2x1 1/8 Color: Velvet. Sold Individually. The specially made Guardhouse box insert will display the coin flat or at a slight angle for quick viewing. The Guardhouse single coin box is ideally designed to hold any 1.75 inch coin or coin capsule, including the Model H Air-Tite coin capsules. The size, large, refers to the size of the insert, which is 1.75 inches, or 44.5mm. Actual coin box size is 2.5x2.5x1.