The performer borrows a coin, which can be marked. It is covered by a handkerchief, and given to a spectator to hold. He now removes from his pocket a brass box, which is placed on the table, or given to another spectator to hold. The handkerchief is whipped away - the coin has vanished. The spectator holding the box is asked to open it. Inside is another brass box. And inside that a third. And then a fourth ! And finally inside the fourth brass box is the same marked and borrowed coin.
The trick is almost automatic in working - thanks to the precision machined brass box, and a very special gimmick supplied with them. If you want a quality close up prop, for an excellent classic effect, this one is very good value for the money, specially when brass props now cost thrice as much as they did only a few years ago. A good "investment", even if you don't use it in your act!