It may very well be chambered for the 10.75X70R, and right off I'm not familiar with the load data but there was a Gruendig who dabbled in cartridges and had at the very least the 10.75X60 Grundig which I think was the 10.75X60 Leue, who was the nephew of Heinrich Barella. I think this to be the same Gruendig. It may very well be the 10.75X65R Grundig which I think differs from the Collath round. A chamber cast will tell the tale.
Carl Gruendig achieve the rank of master in 1876 and using the average age of a master being 24 years, a guess at his date of birth can be made. He was Koniglich Sachsischer Hofbuchsenmacher or something like top gunmaker sourced by the Royal Saxon court. Remember that it could have been the Royal taste tester who ordered from Gruendig, as long as he was a member of the Royal Court, Gruendig could taut the title, which was purchased as well as acquired thru political connections and had a yearly fee. Dresden was the capital and jewel of the Saxon region. The gun makers guild was formed as early as in the mid 1500s and craftsmen for afar including Suhl moved to Dresden. Carl Gruendig had at least 2 sons, Max and Hugo, who took the company reins just before the beginning of WWI. During WWI Carl Gruendig was intergrated with the Teschner-Collath firm and peddled their products and I'm sure others they sourced from the Suhl craftsmen. He was quite the inventor and a couple patents as well as several petty patents(D.R.G.M.). I'll have to see if I can locate the D.R.G.M. number. Nice effect of the marks to make them more visible.
The lowercase script "g" near the forend lug looks very similar to those found on Sauer examples and the Gruendig examples I have hold additional Sauer marks. I can't tell from these pics but with a single crossbolt flange, he may have sourced one of the Merkel boys.
And that's 3 grams of G.B.P. and not 39.
Kind Regards,
Raimey
rse
