These objects form a rich and comprehensive historical and technical archive of all aspects of metallurgy, including the processes of smelting, working, physical testing and assaying.
before 1889
1696-1700
1860
1843-1889
1884-1886
before 1874
before 1868
1925-1935
1882-1884
before 1873
1887
1830-1860
before 1861
1859
before 1871
1980