Well, the proofmarks are what for the most part show the area of origin and unless there were some extenuating circumstances, a Suhl mechanic just would not send his wares to the Zella-Mehlis proof facility or source from Z-M as Suhl considered the mechanics in Z-M to be inferior to them or a >>red headed step child<<.

For now I don't see any maker's marks less the typical >>R<< beside the tube steel stamp, but that just notes where the tubes were sourced. There may be other marks on the standing breech or on the lower rib.

Standing Breech image:

http://www.hallowellco.com/standing_breech.htm#:~:text=The%20face%20of%20the%20action,recoil%20of%20the%20fired%20round.

Serbus,

Raimey
rse