Boston Coin Half Dollar Tango

The magician shows a coin and a Boston box. Put the coin inside the box and close the lid. The magician waves the box to show that the coin is still there. The magician places it on the back of his hand, which hovers a few centimeters over the table and then, gives a flick on the box. The coin crosses the box and falls down on the table. The box is opened and is empty. Quarter size pictured.