Signal Block Bell, South Eastern Railway
1862
1862
1875
1850
1850-1859
1860
1845
1849
1855
1846-1859
1845
1875
1842
1884
1850
1865
1858
1886
1848
1854
1881
1870
circa 1885
circa 1861
1872-1880
1850-1870
1934
1848-1852
1858
1878
1879
1867
1867
1854
1857
1840-1880
1842
1845
1857-1858
1858
1865
1857-1858
1865-1866
1857-1858
1876
1866
1853
1865
1882
1875
1840