Lighting Box Heart

NOTE:  This is new.  It came from a magician's estate. 

A coin signed by a spectator magically vanishes. The magician shows a closed box sealed with elastic bands.

Inside there is a second box also sealed with elastic bands. Inside that box, there is a small tied bag.

The spectators won't believe their eyes when they open the bag and inside it find their own signed coin.

Simple to do.
Everything can be examined afterward. 

Cloth bag is not included.  You supply your own.