
Five wooden molecular model balls
circa 1810
circa 1810
1840s-1900
1974
2021
circa 1947
c1860
2000-2004
1967
1865-1875
1925-1935
circa 1855
1960-1965
1930-1940
1960-1965
1950-1960
circa 1855
1890-1940
circa 1860
1963
1861
1839
circa 1858
1920
1870
1875-1885
1900
1910-1920
1953
1875-1900
circa 1855
1750
1880-1900
1920-1925
circa 1970
1895-1905
1925-1935
1895-1900
circa 1820
1905-1915
1879
1870-1900