Copper Silver Coin (Half Dollar/English Penny) by Tango
The magician shows two coins, a half dollar and an English Penny coin. He places both coins under a handkerchief, he then takes the half dollar coin and places it on top of the handkerchief, and then raises the handkerchief slightly to show the English Penny coin within...but incredibly now there is a half dollar coin within and the English Penny coin is on top of the handkerchief.
This is only one of many effects possible with this versatile gimmicked coin!