I find 1909 for a Colt 1903 pocket model .38
A Colt 380 hammerless with that serial number was made in 1915.
That Colt .32 hammerless was made in 1924.
The Colt 1908 hammerless .380 with that serial number was made in 1937.
A Colt 1903 hammerless .32 with that serial number was made in 1919.
The Colt 1908 hammerless 380 with serial number 39901 was made near the end of year 1920 as the year 1921 started with serial number 40000.
I found a 1903 hammerless .32 with that serial number made in 1925.
A Colt 1908 hammerless .25 with that serial number was made in 1920.
A Colt model 1908 hammerless .25 with that serial number was made in 1914.
A Colt 1908 hammerless .25 with that serial number was made in 1916. It would be 95 years old.
A semi-automatic model 1903 hammerless .32 with that serial number was made in 1919.
If it is a Colt 1908 hammerless .25 with that serial number, it was made in 1912.
A Colt hammerless .25 with that serial number was made in 1925.