The magician borrows a coin and it is marked/signed by a spectator. The marked coin is held under an handkerchief by a spectator. The magician hands a sealed, round brass box to a second spectator to hold on to. A magical gesture is made over the coin and the handkerchief is pulled away and clearly shown, the coin has instantly vanished. Without the magician touching the brass box, the spectator begins to unscrew the lid. When the lid is removed the spectator discovers another brass box inside. This box also has a lid screwed in place. When the spectator opens the second box they are stunned to discover the marked coin inside!
One of the brass boxes fits perfectly inside the other. You can make a borrowed ring, a signed coin or a small billet of paper with a prediction appear inside the boxes. Supplied with special black satin handkerchief for the vanish.