I also posted on Gunboards, but I registered on here to see if anyone has any information regarding "System Klobe" (or Kolbe?) Imman Meffert schutzen rifles? Production years, Suhl-specific proof marks? Were these nitro proofed?

Here is an example from 2017:

https://www.rockislandauction.com/de...chuetzen-rifle

Thanks in advance!