A solid die vanishes from a wooden box that has two doors. But the spectators hear the die to slide to the other side of the box. You show the other side. But the spectators hear you slide it back to the other side. After some byplay you open both doors. The die has gone without a trace! It is retrieved from a hat which was empty a moment ago!

That is the description of the classic magic. Howevr, in this newer version you use a golden cube instead of a die. Beautifully finished by hand.