It is impressive to see the real *origin* of the LATER and well-known incarnation of the so-called Kerstenverschluss, which soon simply became a double Greener.
It's like studying paleontology. :-) Like, you mean THIS CRITTER was the first "horse"?!

That one is also impressively overengineered. Basically, a light artillery piece with a reluctant wooden interface to humans.

Carcano