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