Signal Block Bell, South Eastern Railway
1862
1862
1875
1850
1850-1859
1860
1835-1870
1845
1849
1855
1846-1859
1845
1875
1842
1850
1832
1865
1858
1834
1834
1848
1854
1870
circa 1861
1831-1870
1833
1867
1867
1857
1842
1837
1845
1857-1858
1858
1865
1857-1858
1865-1866
1857-1858
1866
1837
1865
1875
1840
1858
circa 1868
1841
1837
1851
1955; 1830
1826
1833-1866