Two door die box

The nickel plated die box has two doors at the front. The magician places a die in the box and then tells the audience it has vanished. The audience is unconvinced because it can hear the die moving when the magician tips the box one way and then the other, only opening one door at a time. After much byplay the magician opens both doors at once. The die has vanished and the magician finds it elsewhere.