The manufacturer is normally stamped on the firearm next to the model, caliber, and serial number.
By model, caliber and serial number.
No. Serial numbers aer NOT UNIQUE. They are intended to be unique to a given make and model- but a gun can be rebarreled to a different caliber.
Take it to a gunsmith
Would need model to answer
It is impossible to identify a weapon with just the serail number.
In most cases, if you give me only a serial number, and no info on make, model, caliber, then no. A serial number is not unque, or it would be 20 numbers long.
Without knowing the model and caliber, we can't tell. A serial number ALONE does not identify a gun.
Impossible to do with only the serial number. Provide a detailed description of all features, markings, caliber/gauge, barrel length, sights, etc..
model and serial number
It probably isn't stamped anywhere on the gun. If you know the manufacturer and model, there may be a serial number. If there is a serial, there may be records which will give an approximate date of manufacture.
Virtually impossible to determine caliber by just the serial number.
Several rifles were made in .25-20 caliber. The manufacturer and model number need to be identified as well as the serial to determine the date of manufacture.