Where is this 75mm case frim?

[charley777]

Greetings...
Another 75x277R x89.8 cartridge case...
This appears to have almost no headstamp excepting the "44" and "x" on the primer.
Any clues ? Information ? Speculations ?
Thanks a lot

 

[Alpini]

It seem the base including primer was turned down in a listless manner on a lathe (without automatic feed).

The primer with the large diameter open percussion cap is a little bit unusual. I know this design from danish primers but I am sure there are others with this design too. Maybe it's a track...