Dates of Hamilton Movements The Hamilton Watch Company, one of America's premiere watch manufacturers, started producing watches in 1892, in Lancaster, Pennsylvania. They are still producing watches today, but the brand name is now owned by the Swatch Group. They last produced watches under their own original company in 1969. To use the following table: Remove back of the watch Identify movement Check chart below for years of manufacture Interpolate to "guess" year
Movement Serial Numbers Year[s] 979 2900001-2931900 1934-1951 986 2100001-2191300 1922-1926 401 H50001-H57500 1930-1933 987 001-0486300 1937-1948 987E 4025301-4523000 1928-1937 987S SS001-SS87400 1940-1948 980 G101-G669400 1934-1951 980B A001-A8900 1937-1946 H980 HW001-HW1075 1942-1949 980I W001-W1050 1942-1948 982 J1001-J670600 1935-1951 982M M001-M201900 1941-1951 747 Y001-Y453800 1947-1954 748 CY001-CY232000 1948-1954 750 001A-914000A 1949-1954 752 001E-48000E 1951-1954 753 001F-103400F 1951-1954 754 001H-43900H 1952-1954	Pocket watches Date.......Serial Number 1893 1-2,000 1894 5,000 1895 10,000 1896 14.000 1897 20,000 1898 30,000 1899 40,000 1900 50,000 1901 90,000 1902 150,000 1903 260,000 1904 340,000 1905 425,000 1906 590,000 1907 756,000 1908 921,000 1909 1,087,000 1910 1,050,500 1911 1,290,500 1912 1,331,000 1913 1,370,000 1914 1,410,500 1915 1,450,500 1916 1,517,000 1917 1,580,000 1918 1,650,000 1919 1,700,000 1920 1,790,000	1921 1,860,000 1922 1,900,000 1923 1,950,000 1924 2,000,000 1925 2,100,000 1926 2,200,000 1927 2,250,000 1928 2,300,000 1929 2,350,000 1930 2,400,000 1931 2,450,000 1932 2,500,000 1933 2,600,000 1934 2,700,000 1935 2,800,000 1936 2,900,000 1937 3,000,000 1938 3,200,000 1939 3,400,000 1940 3,600,000 1941 3,800,000 1942 4,025,000

Thanks to Greg A. Leveto, Ph.D. 1999, 2000.