Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1945
1940
1834-1836
1935
circa 1939
1940
1839 (original); circa 1988 (replica)
1936
1930-1939
1940-1945
1934-1935
1937
1934-1945
1936
1936
1940
1935
1990-96
1933
1937
1934
1942
1936
1943
1943-1945
1931
1938 and 1951
1935
1937-1938
1930-1940
1940-1944
1903 (original); 1982 (model)
1947
1945
c. 1933
1947
1946
1937
2000-100 BCE
1938-1940
1943
1938
1940
1946
1937
4000-2001 BCE
1934
1931
1939-1945