
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1839 (original); circa 1988 (replica)
1934
1930
1928
1934
1931
1927
circa 1930
1928
1928
2000-100 BCE
Before 1932
before 1928
1932
1930-1931
circa 1930
1927
1931
1934
1931
1932
1927
1933
1934
1931
1928
1933
1924
1927
1932
1955; 1830
1927-1929
1930
circa 1927
1933
1990-96
1930
1933
1801-1892 (prepared); 1946 (element replaced)
1934
1933
1929
1931
1934
1952-3
1927
1928
Before 1932
4000-2001 BCE