Signal Block Bell, South Eastern Railway
1862
1862
1898
1902
1901
1875
1898
1850
1850-1859
1860
1850-1900
1835-1870
1878-1890
1878-1890
1878-1890
1895
1845
1895
1849
1855
1846-1859
1845
1875
1842
1884
1850
1901
1832
1865
1858
1886
1834
1834
1848
1896
1901
1854
1850-1900
1850-1900
1850-1900
1881
1850-1900
1878-1890
1878-1890
1870
1821-1850
circa 1885
1904
1840s-1900
About 1890
circa 1861