The action is definately GERMAN. Looks like a JP Sauer Model 3 action to me. Not familiar with the maker, just like in England there were quite a few provincial gunmakers in Germany, so who knows. Is there a "Sauer und Sohn" mark on the watertable? The mark is a S on top of a banner, with a small "u" in the banner followed by another "S" underneath that. Check it out.

Best,
Dustin