
Ivory model of back-to-back skull and head
Before 1932
Before 1932
1941-1950
1930-1931
1930-1962
1969
1939-1969
1938-1940
1955-1965
1971
1948-1970
1924
1940
1957
1957
1957
1955
1975
1957
1967
1950
1935
1940-1950
1933-1969
1933-1969
1930-1962
1967
1921-1926
1926
1930-1960
1920
circa 1920
1958
1922-1923
1922-1923
1922-1923
1922-1923
1920-1970
1933-1969
1933-1969
1930-1950
1961
1926
1967-1972
1965
1963
1968
1955
1931
1955; 1830
1956