Help with MK III Shell Markings

[all-bull]

Hello everyone,
I am curious as to what all these different stamps on this shell mean? Any help would be great! Thanks a lot!!

[all-bull]

2

[all-bull]

3

[all-bull]

4/4 Thanks!

[Infanteer]

All I can tell you is that it is a 6 pdr (pounder) Mk III projectile. The 6 pdr gun was an anti-gun used by the British during WW2 but before that it was used as a light naval gun and coastal defense weapon. Additionaly, it was also used as a tank gun during WW1. With the anchor stamps on the projectile it would presumably be for one of the naval guns. Search 6 pdr gun online to find much more info.