Cryptograph (coding and decoding machine) by Sir Charles Wheatstone, 1843-1875
1843-1875
1843-1875
1955-1965
1910-1930
1905-1915
1881-1932
1890-1900
1910-1930
1925-1935
1905-1915
1895-1910
1905-1915
1910-1940
1956-1960
1840-1848
1822-1893
1897
1954
1840-1848
1835-1900
1837-1900