Model ground signal, North London Railway
1888
1888
circa 1885
1886
1885
1886
2000-100 BCE
1893-4
1934
1872 (original); 1909 (model)
1955; 1830
circa 1885
1886-1887
1990-96
1885
1930 (replica); 1834 (original)
1705-1737
1934
1888
1772 (original); 1919 (model)
4000-2001 BCE
1839 (original); circa 1988 (replica)
1830 (original); 1967 (model)
1801-1840 (original); 1901 (model)
1775-1799 (original); 1900-1907 (model)
1888
1887
1888
1886
1886
1887
1886
1888
1888
1886
1825; 1910
1886
1886
1888
1887
1887
1888
1888
1888
1970-1875
1888
1886
30 CE
30 CE
1885
2686-2613 BCE