
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1935
1935
1934-1935
1936
1940
1935
1930-1939
1830 (original); 1967 (model)
1839 (original); circa 1988 (replica)
1952-3
1938
1938
1938
1935
1938
1940
1940
1936
1934
1938
1938
1932
1955; 1830
1935
1932-1936
1934
1937
1931
1931
1937
1930
circa 1930
1930-1940
1932
1935
1933
1939
1936
1938 and 1951
1935
1934
1936
1934
1931
2000-100 BCE
Before 1932
1938-1940
1932
1930-1931