What you have is a Set of Brass Coins being a normal and a cut out one along with a shell that perfectly nests over either coin.  The Asian designs are engraved.  The instructions give routine for Hong Kong Coin, Half and Chinese Coin Xpo (regular half not included), Coin On Finger Routine, Coin On Hank Routine, Penc-Off, Steve Dusheck Routine for Coin & Cord.  Includes illustrated instructions.  Shell is made to fit over a half dollar.  Condition fine with some tarnish.