
Three-ring Enigma cypher machine in oak wood transit case
1934
1934
1839 (original); circa 1988 (replica)
1926
1934
1930
1925
1928
1934
1931
1927
circa 1930
1928
1932
1931
1927
1927
1933
1926
1925
1931
1925
1928
1924
1927
1934
circa 1930
1934
1931
1955; 1830
1925-1928
1927-1929
1932
1928
1926
2000-100 BCE
Before 1932
before 1928
1932
1930-1931
1933
1930
circa 1927
1925
1933
1990-96
1930
1933
1931
1926
1926-1928