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Envelope Board
The magician reveals a signed board inside an envelope with a window. After the spectator selects a card, the board is removed, showing the name of the chosen card on the other side.
Specific References
The magician shows a brown envelope and pulls out a large board with polished edges, displaying both sides. On one side, a spectator signs their name, and then the board is placed back into the envelope. The envelope has a window, allowing the audience to see the board inside. The magician asks the spectator to choose a card from a deck, and when the board is pulled out again, the name of the selected card is written on the other side.
The magician reveals a signed board inside an envelope with a window. After the spectator selects a card, the board is removed, showing the name of the chosen card on the other side.