
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1952-3
1830 (original); 1967 (model)
1934
1930
circa 1930
1931
circa 1930
2000-100 BCE
1927
1931
1930-1931
1928
1934
Before 1932
before 1928
1932
1928
1932
1955; 1830
1934
1931
1927
1927
1933
1928
1934
1931
1928
1924
1927
1926
1926
1933
1926-1928
1926-1934
1930
1927
1801-1892 (prepared); 1946 (element replaced)
1930 (replica); 1834 (original)
1930
1928
4000-2001 BCE
1933
1934
1839 (original); circa 1988 (replica)
1933
1931
1932
1926-1932