That looks like quite a robust unit you’ve acquired. Is that an auto-feed mechanism on the 3rd photo?
The build and fabrication looks 60-70+years; is that about right?

One thing I have seen her e in the States in machine trade was where pieces built by a smaller producer for a larger company that wanted a certain machine to complement what they offered but it wasn’t in their wheelhouse to make.
When confronted with an end of contract or such, the producer would have stock left on hand that was rebranded in such a way as to not cause a legal problems selling leftover stock.
I know these are shots in the dark wearing a blindfold, but does the sound of ricochets ring anything along the same lines.
I have had to track down so many defunct machine parts for rebuilds that I get like a dog on a scent when I cross the path.
My little gray cells are fizzing.