It could easily also be for the French market with "Sur" but that doesn't look like typical deep relief French engraving. When you slide the top tang safety forward are there any other letters? I could very easily be wrong, but when I see the images I think of Argentina. I haven't been to France but they may have the same critters there. I think it to be a price point longarm and South America was a market for Belgium early on in the 20th century. The engraving is odd. The pattern welded tubes are interesting also as outside of Germany I don't know who else would really cotton to them. On the double rifle mentioned, Rigby could have been the source for those tubes.
Kind Regards,
Raimey
rse
