What a startling coin effect!
Show two coins, a half dollar and an English penny. Place them in your closed hand. Remove one, show it, place it in your pocket. Open your hand- both coins are still there! Repeat this several times, if you wish. Finally, as a climax, after removing a coin and placing it in your pocket, open your hand- it's empty! Both coins have vanished!
Completely mechanical and easy to do. This version is done with all gimmicked coins.
The Expanded Shell version uses real coins and expanded shells.