Signal Block Bell, South Eastern Railway
1862
1862
1875
1850
1850-1859
1860
1849
1855
1875
1850
1865
1858
1848
1854
1870
circa 1861
1872-1880
1850-1870
1934
1848-1852
1858
1878
1879
1860
1867
1867
circa 1861
1854
1857
1857-1858
1858
1851
1865
1857-1858
1858-03-02
1865-1866
1879
1857-1858
1876
1866
1850-1859
1853
1865
1875
1852
1858
1849
circa 1868
1879
1851
1955; 1830