Synchronous mains electric clock of the self-starting type
1934
1934
1934
1935
1935
1934
1936
1955; 1830
1934-1935
1935
1937
1937
1936
1935
1935
2000-100 BCE
1936
1935
1936
1937-1937
1935
1934
1935
1934
1937
1937
1990-96
1934
1935
1935
1935
1936
1935
1937
1936
1937
1935
1934
1801-1892 (prepared); 1946 (element replaced)
1936
1935
1903 (original); 1982 (model)
4000-2001 BCE
1830 (original); 1967 (model)
1935-1936
1935
1934
1935
1839 (original); circa 1988 (replica)
1937
circa 1937