Packet: “Bismuth and tin crystallised in mercury”
1790-1819
1790-1819
1790-1819
1939-1970
1887-1900
1801-1892 (prepared)
1982
1862-1880
circa 1980
1930-1970
1940-1960
1900-1940
1910-1925
1881-1923
1840
1885