Physical description

British Hotchkiss/Nordenfelt 37mm Armour piecing high explosive with base fuse projectile.(APHE)
This is links for more information-: http://oldbritishguns.com/the-37mm-hotchkiss-revolving-cannon- https://en.wikipedia.org/wiki/Armor-piercing_shell#First_World_War_era

Inscriptions & markings

N89
N
We believe these were the inspection numbers.