
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1839 (original); circa 1988 (replica)
1931
1930
circa 1930
1928
1927
circa 1930
1931
1927
1933
1931
1928
1931
1928
1932
1924
1927
1927
1926
1934
1934
1930-1931
1955; 1830
1927-1929
1934
1928
1926
2000-100 BCE
Before 1932
before 1928
1932
1933
1932
1926
1934
1930
1930
1933
1933
1931
1926-1928
1927
1801-1892 (prepared); 1946 (element replaced)
1926-1934
1930 (replica); 1834 (original)
1933
circa 1927
1990-96
1934