Hawkes was taken over by Boosey around 1930. Serial numbers before that are (from this site):
Year | 1st Number |
1895 | 11177 |
1900 | 18020 |
1905 | 21993 |
1913 | 39782 |
1920 | 42159 |
1921 | 44368 |
1922 | 45069 |
1925 | 51635 |
1930 | 60626 |