By the serial number.
With the serial number that you supplied,your Springfield model 1873 Trapdoor rifle was made in the year 1884.
your springfield model 1903 was made in 1920.
Your springfield armory model 1903 springfield rifle was made in 1932.
your springfield model 1903 was produced in 1923.
With the serial number that you have supplied;your Springfield model 1903 rifle was made in the year 1924.
Your serial number indicates that your Springfield model 1903 rifle was made in the year 1918.
Your springfield model 1873 trapdoor was made at springfield armory in the year 1883.
Your serial number indicates that your Model 1903 springfield rifle was made in the year 1909.
With the serial number that you have supplied,your Springfield model 1903 rifle was made in the year 1920.
what model A 50 year springfield .22 cal rifle would probably refer to a springfield that is at least 50 years old. It is impossible to say more about it without knowing a model and serial.
With the serial number that you have supplied,your Springfield model 1873 rifle was made in the year 1874.
With the serial number that you have supplied,your Springfield model 1873 rifle(actually a model 1884) was made in the year 1888.