
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1930-1939
1935
1935
1938
1940
1938
1931
2000-100 BCE
1927
1940
circa 1930
1938-1940
1930-1931
1940
1938
1938
1932
before 1928
1932
1927
1930
1928
circa 1938
1937-1938
1931
1932
1938
1935
1928
1940
1938
1938
1938
1935
1938
1940
1928
1937-1937
1935
1955; 1830
1937-1938
1927
1936
1934
1935
Before 1932
1927-1929
1924
1932-1936