"Two playing cards are inserted into the Glass Board. Between these cards is sandwiched a solid sheet of clear plastic. A pencil is now pushed completely through this sheet of plastic, and a silk pulled through it. When the cards are removed the audience can inspect the board and not understand how the trick is done." Original box containing plastic "board" (plastic is cracked on upper right corner), two cards with holes punched through, and instructions. Some wear and tear to box.