Came across a half bucket of brass, and I thinks "that looks like 8mm" check for primer hole with a handy wire and I feel a clear depression, starting to smile
Check the headstamp, 7.92 and a date, that be 8mm so getting close to the happy dance but then I think dated is military, and German/European military wouldn't be boxer primed, and why do they all have live primers? Led flashlight inside the case and a little more poking and scraping with the wire uncovers the two Berdan primer holes and a center dimple from casting or machining.
I kid you not a few hundred cases of 8mm mauser that I can't use. Well back to making my own slowly, by hand out of 30-06 brass.
My guess is it was mil-surp that someone got cheap and pulled down for the projectiles and maybe powder. Wish they had used pliers to crush the case mouth so I wouldn't have gotten all excited, heart can't take that kind of disappointment.