Materials - coin, pen, pockets.
Note: You may want to try this trick alone before performing it in front of others. It requires a little practice.
Hold coin in one hand with palm open, so all can see. Hold pen in other hand.
Close hand/make fist with hand with coin (make sure you are standing with coin hand towards people).
Tell all that you are going to make coin disappear.
Tap fist with pen three times (make sure you use big arm movements) but after second time store pen behind ear inconspicuously, returning with open hand.
Open hand to show that coin is still there, but the pen has disappeared!
Explain to all how pen has disappeared by turning and showing pen behind ear.
At the same time, using this as a distraction, subtly slip coin into pocket.
Act as if you are going to start again. Turn and hold out fist as if coin was still in it.
Tap fist with pen three times.
Open hand to reveal that the coin has disappeared!
After taking in everyone's surprised looks, take a bow.