If it is a 1911 government model .45, it would have been made about 1913.
In order to tell how old your Colt 25 semi auto pistol is, you will need to offer the serial number. This number gives you an idea of when the pistol was manufactured.
Revolver or semi-auto?
You will have to call Colt since you did not provide the serial number.
Go to: www. proofhouse.com with serial number.
You will have to call Colt since you did not provide the serial number.
u You will have to contact the maker.
1918
If you are looking for age, a Colt 1903 hammerless .32 with that serial number was made in 1916.
You can find out at Proofhouse.com in the Colt tables.
By it's serial number. Go to: www.proofhouse.com
Need to know caliber, barrel length and whether it is a revolver or semi-auto pistol in order to answer.
You probably have a Mk. I pistol, manufactured circa 1958. If this is the case, it would be a semi-auto pistol, chambered in .22 Long Rifle.