
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1839 (original); circa 1988 (replica)
1940
1923
1938
1938
1938
1935
1938
1940
1928
1935
1940
1936
1934
1922
1932
1955; 1830
1935
1925-1928
1927-1929
1926
1932-1936
1934-1935
1934
1937
1931
1931
1927
1937
1930
circa 1930
1930-1940
1932
1925
1928
1923-1939
1924
1935
1927
1933
1926
1922-1923
1939
1936
1922-1923
1922-1923
1922-1923
1938 and 1951
1929-1935