English c.1890, with plaque for 'GRIFFIN SARDINIA St, LONDON', the machine housed in the original glazed cabinet with opening doors to both the front and back, large crank handle to the front driving 2 turned wooden pullys in the base of the cabinet, the glass disks with brass sectors, brass collectors supported on Leyden Jars, with a brass spark gap at the top, case height 61cm, with conductors 88cm