Demonstration piece form Brunsviga calculating machine by Brunsviga Maschinenwerke AG
1950-1955
1950-1955
1781-1820
1892-1893
1780-1820
circa 1958
1925-1935
1943-1953
1929
1860
1927-1937
1935
1936-1950
1899
1780-1830
1790-1815
1820-1840
1880-1890
1875-1885
1972-1982
1920
1945-1953
1922-1932
1948
1925-1935
1929-1939
circa 1958
1909-1919
1945-1955
1927-1937
1930
1922-1932
1925-1935
1922-1932
1939
1899
1917-1927
1923
1922
1932
1938
1955
1956
1933
1933
1925-1935