Серийные номера часов Dueber Hampden

Указаны приблизительные даты выпуска часов. Номера указаны на механизме.

1877 - 59,000     1888 - 560,000      1899 - 1,255,000     1910 - 2,650,000     1921 - 3,700,000
1878 - 70,000     1889 - 640,000      1900 - 1,384,000     1911 - 2,700,000     1922 - 3,750,000
1879 - 100,000    1890 - 740,000      1901 - 1,512,000     1912 - 2,760,000     1923 - 3,800,000
1880 - 140,000    1891 - 805,000      1902 - 1,642,000     1913 - 2,850,000     1924 - 3,850,000
1881 - 180,000    1892 - 835,000      1903 - 1,768,000     1914 - 2,920,000     1925 - 3,900,000
1882 - 215,000    1893 - 835,000      1904 - 1,896,000     1915 - 3,000,000     1926 - 3,950,000
1883 - 250,000    1894 - 900,000      1905 - 2,024,000     1916 - 3,100,000     1927 - 3,980,000
1884 - 300,000    1895 - 930,000      1906 - 2,152,000     1917 - 3,240,000
1885 - 350,000    1896 - 970,000      1907 - 2,280,000     1918 - 3,390,000	
1886 - 400,000    1897 - 1,000,000    1908 - 2,400,000     1919 - 3,500,000	
1887 - 480,000    1898 - 1,120,000    1909 - 2,520,000     1920 - 3,600,000