Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1929
1834-1836
1839 (original); circa 1988 (replica)
1930 (replica); 1834 (original)
1933
1934
1929
1931
1931
1934
c. 1933
1930 (replica); 1834 (original)
1930
1930
4000-2001 BCE
2000-100 BCE
1930-1932
1934
1931
1933
1930
1930-1931
1930
1931
1932
1931
circa 1930
1934
1930-1932
1930
1930-1932
1933
1931
1933
Before 1932
1930
1931
Before 1932
1930s
1930
1930s
1952-3
1938; (1838)
circa 1932
circa 1932
circa 1932
1934
1934; 1947
1929