With the exception of NFA Class III firearms, like machineguns, the government does not HAVE the serial number of guns that you bought new. The dealer maintains a record at his place of business (form 4473). He must retain them for 20 years.
To identify and account for otherwise identical guns.
None of the existing ORIGINAL guns have serial numbers.
1968
The 84c- doesn't have a serial number because they were made before 1968 when the federal government started requiring that serial numbers be put on guns.
Inventory tracking for firearms. BTW, ammunition does not have a serial number.
SOME guns had serial numbers in the late 1800s. They were required by law on handguns and machine guns in 1934 (in the US) and on rifles and shotguns in 1968.
barrel, butt, receiver, under forearm.
They were required after the Gun Control Act of 1968.
Firearms don't have registration numbers, they have serial numbers. No way to know who was the first to put a number on a firearm. Military firearms have had serial numbers for many years, to aid in the accounting for large numbers of identical guns. Serial numbers were not required by law in the US until the 1934 National Firearms Act reqired them on machine guns and handguns. The 1968 Gun Control Act required them on newly made rifles and shotguns.
A lot of older lower end rifles and shot guns didn't have serial numbers. The fed didn't require guns to have unique serial numbers until after WW2
It is not a good idea to post on the internet the serial numbers of your weapon. Someone could report it stolen and even if you have proof of purchase it will be a real hassle for you to remove it from the stolen guns list.
SN's were not required until 1968