== == Stamped serial numbers cause deformation of the metal deep below the surface and can be read even when filed off.
Something that coin collectors use to recover worn off markings on coins is a chemical called Nicodate that could be used on nickles. It might be worth a try. A forensic expert might use acid etching or various scans to recover the number, but that kind of service will likely be expensive.
Firearms weren't required to have serial numbers until the passage of the Gun Control Act of 1968.
Look up the serial number.
The serial number is found on the under side of the gun before the forearm.
Yes it is illegal to own a gun that does not have a serial number. It is also illegal to remove the serial number off a gun.
Receiver
you put ALL information found (location) on any gun to include maker, model and serial number
With just the serial number, nothing.
It would be almost impossible to identify a gun just by its serial number.
Just by the serial number, no.
Impossible to date a gun with just the serial number and no other informaiton.
Impossible to answer. A serial number is not unique to only one gun in the world.
The serial number is on the frame.