Slippery Expanded Shell (Half Dollar)

Here  is a wonderful gimmick coin that will allow you to bring your coin magic to the next level. You will ba able to make coins appear and vanish at you fingertips, make a coin penetrate a card, make coins travel across the close up mat (Matrix), jump from hand to hand...
It can be used for very simple effects or for with more expert coin manipulations, and it's uses will be limited only by your immagination.

Various ideas are explained in a video tutorial.

Note: for the effects shown, regular half dollars will also be required (not provided).