Pocket Oven by Ray Roth

Take out your Pocket Oven and open it. A foil panel one size and a BLANK FACE card on the other size. Close the oven. Have someone select a card from a deck. Set the dial on the oven to broil. Pass a match under the oven. When you open the oven again. The foil panel has a hole burnt through it and the blank card now has burn marks on it that match the selected card.

Bonus routine included that uses the wallet but no cards.

1978 by R.A.R Magic