Signal Block Bell, South Eastern Railway
1862
1862
1906
1898
1902
1901
1875
1909
1914
1914
1914
1906
1898
1864
1886
1890-1894
1904
1878-1890
1878-1890
1878-1890
1915
1895
circa 1905
1863-7
1904-1914
1895
1875
1884
1901
1901
1865
1915
1886
1896
1901
1890-1899
2000-100 BCE
1870-1880
1880-1889
1881
1900-1909
1890-1900
1878-1890
1900-1909
1878-1890
1893-4
1870
1861-1866
1885-1895
1870s
1880-1915