Guardhouse Display Boxes#: GH-1300W2. Size: 7.5x5.25x1.5 Color: Mahagony. Sold Individually. This two slab universal wood display box is designed to hold 2 certified coins from any of the major grading services. Hand crafted from solid wood, this sturdy mahogany Guardhouse box has a black foam interior around the coin slab, a white cushion pad and a black ribbon on the lid's interior, to give the certified coins a neat setting. Interior foam cut-outs for each slab measures 2 3/8 x 3 1/4.