
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1839 (original); circa 1988 (replica)
1926
1934
1930
1928
1934
1931
1927
circa 1930
1928
1932
1955; 1830
1927-1929
1931
1931
1927
1932
1927
1933
1926
1928
1926
1931
2000-100 BCE
Before 1932
before 1928
1932
1930-1931
1928
1933
1924
1927
1934
circa 1930
1934
1930
circa 1927
1933
1990-96
1930
1933
1929
1931
1952-3
1926
1926-1928
1927
1801-1892 (prepared); 1946 (element replaced)
1934