M-J,
The rifle looks a nice one, but could (going by the guard,) have been made in Belgium or France.
Yes, we do sometimes see this guard on SW German pieces, but more so "over the borders".
Are there any marks on the barrel breech?
Some more nice clear close-ups would be nice, including the lock.
To me, the stock shape also has a strong resemblance to the places I mentioned above.
Again, Very nice rifle!