Would appreciate any info on this projectile and the weapon it was used in.
Diameter of the projectile body is 150mm (about 5.8 inches) and overall length about 500mm or 19.5 inches. Copper rotating band very close to the base, and has a bead of solder/lead/zinc on it, possibly when once assembled on a monument. Seat for the fuze is deeply concave, not flat, and has four large depressions (for staking fuze in place?).
No markings visible.