A higher resolution photo of your machine would be nicer.

It's a Pace Ace Space

The company started as Pace.
Does it work?
Here's an informative link to more information on this machine. There's also a link for schematics in the threads.
/nlg/index.php?topic=4750.0Sadly Monti passed away so I don't know what became of his machine.
Although we do have more members with mechanical slots (including me) there's another forum specifically for antique mechanical machines. They have definitely slowed down though... but you may find some information there as well.coinopcollectorforum.com
But again, please post a photo of your machine when you can. I'm moving this thread to "Other Reel Games."