
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1935
1936
1935
1942
1936
1839 (original); circa 1988 (replica)
1936
1940
circa 1939
1934
1938
1938
1935
1930
1930-1940
circa 1942
1928
1935
1934
1931
1927
circa 1930
1938
1938
1938
1935
1938
1940
1928
1940
1936
1932
1932-1936
1934-1935
1937
1937
1932
1938 and 1951
1929-1935
1928
1936
2000-100 BCE
Before 1932
before 1928
1938-1940
1932
1955; 1830
1927-1929
1930-1931