During the 2nd World War anti-aircraft shells were made in their millions. This shell was made specifically for the Bofors light ack-ack (40mm) gun which was designed in Sweden and used by both sides.

Currently, these anti-aircraft guns utilise 23mm Armour Piercing ... the threat without requiring a direct hit. Additionally, the shell fragments must be designed in adequate number, size, shape ...

Officials said the device was a 105mm German anti-aircraft shell. The Coastguard said the duty harbour master, along with Jersey's bomb disposal team, were able to locate the bomb during low water ...