Remember, the serial number being referred to is the serial number on the movement (i.e. "guts") of the watch.  

Note: These are approximate dates. Actual dates may vary by years. 
NOTE THIS INFORMATION DOES NOT APPLY TO DUEBER MADE CASES, JUST POCKET WATCH MOVEMENTS>


1877 - 59,000

1878 - 70,000

1879 - 100,000

1880 - 140,000

1881 - 180,000

1882 - 215,000

1883 - 250,000

1884 - 300,000

1885 - 350,000

1886 - 400,000

1887 - 480,000

1888 - 560,000

1889 - 640,000

1890 - 740,000

1891 - 805,000

1892 - 835,000

1893 - 835,000

1894 - 900,000

1895 - 930,000

1896 - 970,000

1897 - 1,000,000

1898 - 1,120,000

1899 - 1,255,000

1900 - 1,384,000

1901 - 1,512,000

1902 - 1,642,000

1903 - 1,768,000

1904 - 1,896,000

1905 - 2,024,000

1906 - 2,152,000

1907 - 2,280,000

1908 - 2,400,000

1909 - 2,520,000

1910 - 2,650,000

1911 - 2,700,000

1912 - 2,760,000

1913 - 2,850,000

1914 - 2,920,000

1915 - 3,000,000

1916 - 3,100,000

1917 - 3,240,000

1918 - 3,390,000

1919 - 3,500,000

1920 - 3,600,000

1921 - 3,700,000

1922 - 3,750,000

1923 - 3,800,000

1924 - 3,850,000

1925 - 3,900,000

1926 - 3,950,000

1927 - 3,980,000


- Courtesy PocketWatchSite.com