
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1839 (original); circa 1988 (replica)
1931
1930
circa 1930
1928
circa 1930
1931
1933
1931
1928
1931
1928
1932
1924
1930-1931
1955; 1830
1934
1934
1932
1934
1934
1928
2000-100 BCE
Before 1932
before 1928
1932
1933
1930
1930
1933
1933
1931
1801-1892 (prepared); 1946 (element replaced)
1930 (replica); 1834 (original)
1933
1990-96
1928
1930-1932
1930-1932
1930-1932
1930
1830 (original); 1967 (model)
1934
1932-1933
1934
1928
1930
Before 1932
1931