If you are speaking about a Colt 1908 hammerless .25 , then it was made in 1917.
Impossible to answer without the serial number. You can also contact Colt
Proofhouse.com has Colt sn data.
If it is a Colt 1908 hammerless .25 with that serial number, it was made in 1912.
The Colt model 1911 commercial with that serial number was made in 1953
about 1914
Proofhouse.com has Colt sn data.
A Colt semi-automatic .45 government issue with that serial number was made in 1919.
about 1946
colt woodsman 22 automatic 851119 made about 1934
Go here - http://proofhouse.com/colt/index.html
A Colt model 1908 hammerless .25 with that serial number was made in 1914.
You must call Colt with the serial number and ask them or repost your question with the serial number if you want an answer here.