What's a barrel number? Serial numbers were not required on shotguns in the US before 1968 and most manufacturers did not use them. Many were marked with a "batch number" for internal record-keeping/quality control, etc. and various other numbers for various reasons unknown and unimportant once they left the factory. If your gun is marked "J. Stevens & Co" it was manufactured from 1864 to 1886. From 1886 to 1916 they were marked "J. Stevens Arms & Tool Co", and after 1920 "J. Stevens Arms Co". Sometime in the 1940's the marking was changed to just "Stevens" and usually accompanied by "Savage Arms". Authentication means paying a recognized expert to examine the gun and sign a certificate stating that it is an original product. I think, in the case of a Stevens shotgun, there is little chance of it being "counterfiet" and no one will care if it has a few replacement parts.
Serial numbers are not unique between makers. Impossible to answer.
Serial numbers are not unique between makers. Impossible to answer.
The serial number is on the frame.
The barrel and receiver should have the same serial number.
plz help me what is the difference between a prime minster and a chief minster
Serial number will be on the frame or receiver. not the barrel
The serial number should be on the front barrel band, in some cases it is on the barrel.
Barrel or receiver or both.
Stamped on barrel, Barrel and reciever one piece.
Sometime between 1894 and 2007. You need to provide a serial number to get a date.
Impossible to answer without the serial number.
Check the receiver and barrel.