Universal Geneve Wig-Wag

Just came across this peculiar UG which I had never seen before and wondered if anyone here owns one of these and/or could tell me more about this model?

It seems to be some sort of early self-winding movement but I have not been able to figure out how it works nor why the case is as it is. And the case is quite special as there are essentially two cases, an external one and an internal one holding the movement.

There is a bit more information here but it isn't perfect (and in Italian): https://orologi.forumfree.it/?t=73491717

Some pictures from the web below. Most examples on the web are Aster branded examples which makese sense since it is their movement.

Found another one:

From the web: Aster Wig-Wag, an incredibly weird approach to autowinding in which the entire movement, with dial, was intended to slide back and forth in a subassembly in the case, with a plunger, fixed against the non-moving portion of the case, driving the winding wheels.

Curious to see (and feel) how this works in the metal! (I have one incoming)