
Original laboratory sample of 'M and B 693', England, 1938
1938
1938
1958-1959
1949
1940
1965
1951
1962
1948-1960
1948
1940
1963
1944-1945
1944-1951
2050-1750 BCE
1990-95
1959
1955
1942-1943
1958
1946-1950
1960
1945-1952
1939
1955-1965
1958-1962
1962
1947
1943-1966
circa 1940
1966
1966
1961
1943
1959
1945
1966
1947-1957
1958
1965
1960
1958
1940
1938-09-28
circa 1950s
circa 1955
1964-1965
1960s
1940
1954
1964