Coin-Op Fortune Teller Automaton with Film Strip

This coin-operated fortune teller automaton seems to have used a film strip to show a fortune in the "crystal" ball.

My guess is that the mechanism used a Geneva wheel to advance the film one (or some other odd number) of frames. When the film was in place, a small light bulb would probably have lit for a few moments, allowing the viewer to read their fortune.

Here's a tantalizing view of the actual mechanism:
You can see the old battery in the lower right. Hey...are those thread spools on which the film sat? I would love to get a chance to fix this piece up.

Here's the listing on eBay for the fortune teller automaton with answer strip and coin mechanism.