Addac adding machine
1926
1926
1926
1927
1934
circa 1927
1927
1927
1927
1926
2000-100 BCE
1955; 1830
1990-96
circa 1927
1926
1927
1934
1927
1930 (replica); 1834 (original)
1926
1801-1892 (prepared); 1946 (element replaced)
1926
1903 (original); 1982 (model)
1830 (original); 1967 (model)
4000-2001 BCE
1950-1920
1971-1900
1926
1926
1926, May
circa 1927
2000-1350
1972-3
1945-50
1990-95
30 CE
30 CE
1859; 1986
3500-1000
1927
1970-1900
1926
1927
1927
2686-2613 BCE
1927
1927
1927
1965-1900
15/7/27
15/7/27