A cartridge case everyone should have !
This case is from the 800mm Gustav cannon the largest ever built capable of firing a 4.8 tonne & 7 tonne projectile used in the siege of Sevastopol in WWII.
Weighed over 1,350 tonnes took a veritable army of men and flak batteries with fighter cover to operate.
For scale my wife is 5' 8" tall it is not a faker as it had the primer (Fired) present it's a whopper of a case.