Restoring a Mystery Beck Foot Pump

This foot pump caught my eye, so I bought it at a market in Portugal. The reason it stood out was the amazing build quality. I eventually got round to restoring it. Foot pump was made in Switzerland as the town is referenced on the label.
Herzogenbuchsee. So this was promising but I was unable to find a single reference on the internet for such a make or model of foot pump.
I can assure viewers that this company would of gone bankrupt very quickly (assuming it was made in the 70´s ) by making an item to such high quality
Today such an item would be impossible to produce within any kind of acceptable budget
This was the reason it needed to be restored and If anybody has any information or knowledge it would be great to know