That Colt .32 hammerless was made in 1924.
If it is a Colt 1908 hammerless .25 with that serial number, it was made in 1912.
The 1903 Colt Hammerless .32 with serial # 137295 was manufactured in 1912. about 1913
The Colt model 1908 hammerless .25 with that serial number was manufactured in 1919,
A Colt 1908 hammerless .25 with that serial number was made in 1921.
It was manufactured in 1937 or 1938.
@1911
A Colt 380 hammerless with that serial number was made in 1915.
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.
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.
The Colt 1908 hammerless .380 with that serial number was made in 1937.
If your Colt is a 1908 hammerless .25 model then it was made in 1928. You may look it up at proofhouse.com.