16th-18th century AD. A roughly 8lb iron cannon ball, likely a demi-culverin, with spherical body and horizontal cylindrical shaft to accept an explosive charge. See The Portable Antiquities Scheme, record id. GLO-A2F9C6, for a ball of similar weight and profile; see McConnell, D., British Smooth-Bore Artillery: A Technological Study to Support Identification, Acquisition, Restoration, Reproduction and Interpretation of Artillery at National Historic Parks in Canada, 1988, esp. p. 292; see Blackmore, H.L., The Armouries of the Tower of London. I., Ordnance, London, 1976. 3.7 kg, 11.5cm (4 1/2"). Property of a Buckinghamshire, UK, gentleman; acquired after 2000. The Demi-culverin was a large artillery piece that, because of its effective range and power, was often used in sieges and building demolition. [No Reserve]