Below is a list of the serial numbers of handmade flutes produced by the Wm S Haynes Flute Company. Please note that this does not relate to ‘Commercial’ models.
| Serial Number (end of year) | Year of Manufacture |
| 507 | 1900 |
| 612 | 1901 |
| 655 | 1902 |
| 720 | 1903 |
| 783 | 1904 |
| 873 | 1905 |
| 1003 | 1906 |
| 1125 | 1907 |
| 1279 | 1908 |
| 1436 | 1909 |
| 1666 | 1910 |
| 1889 | 1911 |
| 2137 | 1912 |
| 2408 | 1913 |
| 2698 | 1914 |
| 3002 | 1915 |
| 3352 | 1916 |
| 3804 | 1917 |
| 4422 | 1918 |
| 5002 | 1919 |
| 5572 | 1920 |
| 6120 | 1921 |
| 6630 | 1922 |
| 7099 | 1923 |
| 7613 | 1924 |
| 8191 | 1925 |
| 8883 | 1926 |
| 9469 | 1927 |
| 10075 | 1928 |
| 10655 | 1929 |
| 11167 | 1930 |
| 11641 | 1931 |
| 11985 | 1932 |
| 12259 | 1933 |
| 12484 | 1934 |
| 12854 | 1935 |
| 14248 | 1936 |
| 14748 | 1937 |
| 15275 | 1938 |
| 15639 | 1939 |
| 16042 | 1940 |
| 16464 | 1941 |
| 17057 | 1942 |
| 17799 | 1943 |
| 17861 | 1944 |
| 17890 | 1945 |
| 18010 | 1946 |
| 18487 | 1947 |
| 19154 | 1948 |
| 19929 | 1949 |
| 20644 | 1950 |
| 21456 | 1951 |
| 22187 | 1952 |
| 22820 | 1953 |
| 28517 | 1954 |
| 24326 | 1955 |
| 25246 | 1956 |
| 26214 | 1957 |
| 27242 | 1958 |
| 28334 | 1959 |
| 29359 | 1960 |
| 30296 | 1961 |
| 31238 | 1962 |
| 32163 | 1963 |
| 33033 | 1964 |
| 33946 | 1965 |
| 34788 | 1966 |
| 35601 | 1967 |
| 36439 | 1968 |
| 37279 | 1969 |
| 37975 | 1970 |
| 38715 | 1971 |
| 39506 | 1972 |
| 40271 | 1973 |
| 41006 | 1974 |
| 41730 | 1975 |
| 42419 | 1976 |
| 43161 | 1977 |
| 43926 | 1978 |
| 44706 | 1979 |
| 45535 | 1980 |
| 46230 | 1981 |
| 46842 | 1982 |
| 47242 | 1983 |
| 48554 | 1984 |
| 47763 | 1985 |
| 47923 | 1986 |
| 48107 | 1987 |
| 48324 | 1988 |
| 48559 | 1989 |
| 48782 | 1990 |
| 49016 | 1991 |
| 49217 | 1992 |
| 49447 | 1993 |
| 49653 | 1994 |
| 49863 | 1995 |