| Model 1908 Hammerless .25 | |
| Year | Serial Number |
| 1908 | 1 |
| 1909 | 800 |
| 1910 | 21500 |
| 1911 | 40000 |
| 1912 | 61000 |
| 1913 | 81700 |
| 1914 | 102000 |
| 1915 | 119000 |
| 1916 | 133500 |
| 1917 | 152000 |
| 1918 | 175000 |
| 1919 | 192500 |
| 1920 | 232000 |
| 1921 | 280500 |
| 1922 | 304000 |
| 1923 | 322000 |
| 1924 | 336000 |
| 1925 | 342500 |
| 1926 | 353000 |
| 1927 | 362500 |
| 1928 | 367000 |
| 1929 | 375000 |
| 1930 | 382000 |
| 1931 | 388500 |
| 1932 | 392000 |
| 1933 | 395000 |
| 1934 | 398000 |
| 1935 | 401000 |
| 1936 | 402500 |
| 1937 | 404000 |
| 1938 | 406000 |
| 1939 | 407500 |
| 1940 | 408000 |
| 1941 | 409000-409061 |