As many as the manufacturer decides to use. There isn't a standardized, across-the-board format for this sort of thing.
You find a published list of serial numbers for the maker.
No way to answer. Serial numbers are NOT unique to only one gun in the world.
There is ONE serial number (may have several digits that make up entire number) The serial number is the number on the receiver (frame) of the gun, Other numbers may be assembly numbers or parts numbers. By law, the receiver IS the gun- the rest is only "parts".
Impossible to answer. A serial number is NOT unique to only one gun in the world- if it were so, serial numbers will be numbered into the trillions.
There are likely several THOUSAND guns with that number. Serial numbers are NOT unique to only one gun in the world.
Firearms weren't required to have serial numbers until the passage of the Gun Control Act of 1968.
No way to answer. Serial numbers do not work that way.
Winchester serial numbers were unique to the model of the gun,The only thing the serial number tells you about the gun is it's age.The serial number you've listed was from a gun made in 1974.
Your gun sn: B70526 has too many numbers in the serial number, to be a gun that starts with "B" in the serial sequence. Please re-check and ask again.
It is not possible to tell a model from the serial number. Serial numbers are not unique to only one gun in the world.
There may not be a serial number on the gun. If that gun was made before 1968, .22s & shotguns often did not have serial numbers. In 1968, a law then required all firearms to have a unique serial number.
Sorry, but you probably cannot. Most serial numbers alone do not convey much information, and despite belief to the contrary, a serial number is NOT unique to only one gun in the world (or serial numbers would run into the billions)