A friend picked this up for me the other day,but neither of us know anything about it.
There are no markings anywwhere on the projectile,also, there are no threads on the inside of the brass top for a fuze to screw into.
The brass top measures approx 4.5cm from the inside of the projectile to the top,and measures 2cm on the outside.
The measurements are, 17.5cm long, 3.5cm top diameter and 5.3cm base diameter.
All help appreciated!