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