Card Revelation Watch circa 1960: scarce!

A spectator freely chooses a card.  It is lost in the deck. The magician fails to find the card but  then shows the spectator his watch he has been searing the entire time. The card is revealed in the crystal of the watch!  This is a fully functional timepiece  (wind up)  that every 20 seconds slowly reveals the card in the crystal. Comes with a one way deck.  Scarce!  Very good condition and perfectly functioning. Circa 1960.