The magician shows 2 large coins: a Chinese coin (with a hole in the center) and an American one dollar Eisenhower coin. He puts both coins inside of a white envelope, before he removes the Chinese coin and places it on top of the closed envelope. With a magic pass, they transpose - the Chinese coin is suddenly inside of the envelope and the dollar coin is outside the envelope! 

In this package, you will find a finely crafted gimmicked coin set produced by Tango Magic along with link for videoinstructions.

Click at the youtube-link to watch Kim Andersen's presentation of this classic within coin magic.