You borrow a signed coin, then you make disapear with a magic silk. Then you show a beautiful brass box that you give to a spectator.
The spectator opens it and finds another smaller box. Suprised, he opens this box and find another one
and it is not finished because inside he finds one more box.
Fianlly, he opens this fourth box and the signed coin is inside of it!!
4 brass boxes, a silk and a gimmick are provided.