I am searching solid info on Austrain made (Hirtenberger) 105mm low recoil tank gun (M57) cases made of steel.
To be exact I am interested in the headstamps (images).
I did only a brief search and was not really able to establish the origin of the case design which I assumed to be French GIAT but their 105mm has a long and shallow shoulder while the design in question is cylindrical. I checked on Belgian MECAR but the only one I have found now was a straight walled 90mm.
I am sure I have some docs somwhere ID-ing the origin of this case but can not locate it.
But as said for now I am after the headstamps on the HP loaded rounds.
Here an image from an undisclosed Austrian military document.