The machine and treadle stand was made by national. Look at the name Pritzlaff on the stand, you'll see that's a bolt in piece. National did that so they could make one stand yet have different brand names.
I know I have seen Pritzlaff in the past, not coming up with what that was. The cabinet ( wooden part ) looks European
I have to wonder if ? Pritzlaff was able to buy just the machine and stand, then make there own cabinets