A group of magnet fishers were left stunned after pulling a Royal Navy CANNON dating back to the 19th Century out of a river - in one of the first discoveries of its kind.<br /><br />Six members of The Peaky Dippers spent several hours scouring the River Don, in Sheffield, after hearing stories about wartime artillery being dumped there.<br /><br />And they were left gobsmacked when they latched on to a heavy item while fishing from the riverbank - and hauled out a 3ft (0.9m) antique cannon.<br /><br />The treasure hunting group, based in Birmingham, later discovered it belonged to the Royal Navy Signals and dated back to the 1800s.
