This is a working Spirit Bell complete with instructions and original box. I am the original owner of this Spirit Bell made by National Magic Company. It is in working order. I have never oiled it or tampered with the mechanism. 40 years ago, I cut a square out of the panel to hold the gimmic properly in the box as you can see by the photos. Beside that, all is original. I love this trick, it is analog, a real bell rings! Original Instructions included. T...his thing is old, it could have been made in the late 1950's. Great Magic! Effect: The glass covers the Bell and the spectators may ask yes or no questions. The Bell will ring once for "yes" and 2 dings for "no" and 3 rings for "maybe". A little comedy employed there. The gimmic is controlled by flexing your stomach muscles, that"s right! Hands free.thanks for looking, Gregory.