
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1921-1930
1839 (original); circa 1988 (replica)
1926
1928
1934
1922
1932
1955; 1830
1925-1928
1927-1929
1934
1931
1931
1927
1930
circa 1930
1932
1925
1928
1924
1927
1933
1926
1922-1923
1922-1923
1921
1922-1923
1922-1923
1921-1926
1928
1925
1926
1923
1934
1924-1927
1934
1921
1931
2000-100 BCE
Before 1932
before 1928
1932
1921-1931
1930-1931
1923
1925
1928
1931
1933