
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1839 (original); circa 1988 (replica)
1940
1935
1935
1935
1930-1940
1931
1930
circa 1930
circa 1930
1935
1940
circa 1938
1938
1938
1934
1937
1931
1937
1933
1938 and 1951
1936
1931
2000-100 BCE
Before 1932
1938-1940
1932
1930-1931
1937-1937
1937-1938
1937-1938
1931
1933
1938
1938
1938
1938
1940
1932
1955; 1830
1938
1938
1936
1940
1935
1936
1932
1934
1940