Magnetic Flipper Coin (Half Dollar) by Tango Magic

The magician shows two coins, places them both in one hand. With a small gesture, one of the coins disappears! The performer then takes the remaining coin and places it on the table. Then with a pass of the hands over the coin and it, too, vanishes!

This is the magnetic version of the Flipper Coin, which stays in a locked position until you open it with momentum or a magnet of reverse polarity.