Naval Shell

This is a cartridge of the biggest naval WW-I shell in the world. Ok, my daughter and her friend are posing on the picture as well, but I took this picture for the cartridge. It is a cartridge of a 30,5 cm naval shell and a lot of experts will tell me that there were much bigger naval guns in both wars. That's true, but all the bigger calibers were without cartridge, so this one is absolutely the biggest.