Designed and manufactured in Newcastle-upon-Tyne, by Sir W.C. Armstrong in 1870 and nicknamed 'The Rock Buster' - this is the best preserved example of an early 'Supergun'. Four were originally made and sold to the Italian Navy for mounting on their battleships. The British Government, alarmed that their important Mediterranean bases might be defenceless against long range bombardment from these weapons, commissioned two guns each for Malta and Gibraltar.