Guardhouse Display Boxes#: GH-GT-3SLAB. Size: 11.25x5.5x1.5 Color: Wood. Sold Individually. This stylish three slab wood-glass top box holds and displays three NGC, PCGS or similarly sized coin slabs. Hand-made with real wood, this stunning glass top box has a black foam interior and a white collar, providing an elegant setting for certified coins. The three slab wood-glass Guardhouse box has two inset sturdy gold-colored hinges and magnet closures.