1936
1935
1934
1938
1939
1955; 1830
1938 and 1951
1937-1938
2000-100 BCE
1937-1937
1990-96
1986 (replica); 1501-1600 (original)
circa 1939
1937
1830 (original); 1967 (model)
1801-1892 (prepared); 1946 (element replaced)
1936-1939