
Five wooden molecular model balls
circa 1810
circa 1810
1840s-1900
1840s-1900
c1860
2021
circa 1947
2000-2004
1840s-1900
1974
1910-1920
1875-1900
1920-1925
circa 1820
1895-1900
circa 1900
1962
1920-1930
circa 1970
circa 1965
1855-18665
1972
1910-1920
1953
circa 1965
1970-1975
1918
1930-1960
circa 1925
1900-1910
1895-1905