Made in 1927.
A Colt hammerless .25 with that serial number was made in 1925.
A Colt model 1908 hammerless .25 with that serial number was produced in 1917.
A Colt 1908 hammerless .25 with that serial number was made about 1912.
about 1921
about 1921
The Colt model 1908 hammerless .25 with that serial number was made in 1909
A Colt model 1908 hammerless .25 with that serial number was made in 1914.
Proofhouse.com has Colt sn data.
about 1919
about 1936
about 1921
about 1926