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Telegraph block instrument, South Eastern Railway
circa 1905
circa 1905
1911
1901
2000-100 BCE
1900-1909
1904
1910
1910
1908
1901
1902
1901-1911
1904
circa 1910
circa 1900
1912
1909
1910
1900
1872 (original); 1909 (model)
1905
1955; 1830
c.1912
circa 1900
1903
1901
1900-1910
1900
1901-1911
1911
circa 1900
after 1903
1901
1906
1901
1902
1902
1906
1912
1910
1910
1901
1901
1900-1910
1900-1910
1900-1909
1902-1907
1904
1903
1906