Demonstration piece form Brunsviga calculating machine by Brunsviga Maschinenwerke AG
1950-1955
1950-1955
1781-1820
1780-1820
1927-1937
1892-1893
1929
1935
circa 1958
1925-1935
1943-1953
1860
1936-1950
1780-1830
1790-1815
circa 1958
1820-1840
1875-1885
1972-1982
1920
1945-1953
1899
1880-1890
1945-1955
1925-1935
1929-1939
1948
1922-1932
1909-1919
1927-1937
1933
1931
1932
1938
1955
1956
1933
1933
1925-1935
1922-1932
1922-1932
1930
1925-1935
1939
1917-1927