Block bell; single stroke; Stockton & Darlington Railway, c.1852, enamel plate attached reads "Railway Signal Bell - Charles V. Walker FRS Invenit". Overall: 325 mm x 310 mm x 295 mm. Railway Signal Bell - Charles V. Walker FRS Invenit 1847-1857
Block Bell, actuated in part by clockwork, enamel plate attached reads "T. Brittan Patentee London". Block bell, actuated in part by clockwork
Block bell with tapper, large dome bell, Midland Railway, dated 1888. Block bell with tapper, Midland Railway 1888
Block bell, external dome, marked 'East Boldon', from Monkwearmouth signal box. Block Bell for Monkwearmouth Signal Box