Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1929
1834-1836
1928
1934
1839 (original); circa 1988 (replica)
1926-1932
1927-1928
1990-96
1933
1926
1934
1929
1927
1926
1927
1931
1931
1934
1903 (original); 1982 (model)
1930
c. 1933
2000-100 BCE
4000-2001 BCE
1934
1928
1931
1926
1930-1932
1927-30
1930-1931
1955; 1830
1930
1933
1930
1931
1926-1928
1932
1934
1926-1934
1926
1931
1927
1930-1932
1930
1928
1933
1928
1926
1930-1932