Not possible. Serial numbers are not unique to one maker.
Need more information. Start with the manufacturer or trade name marked on the rifle. I can find 50 or more models that COULD have a 7-digit serial number with a B prefix.
Basically impossible to do with just the serial number.
Contact Winchester with the serial number of the rifle
You can't. One serial number is NOT unique to only one rifle in the world. Sorry.
the serial number is written on the metalwork on the left hand side of the rifle.
Try contacting the manufacturer.
If your Colt Stagecoach was made from 1965 - 1968 it will not have a serial number.
Do a net search on "manufacturer's name" and "serial number". With luck you might find a website describing how to interpret the serial number.
It is likely that a Savage Model 22 rifle does not have a serial number. Serial numbers were not required by law in the US until 1968.
What is the year of manufacture of Winchester model 94 rifle serial number 2359141
Varies by manufacturer. Some manufacturers print the manufacture date on the rifle (this tends to be more common on military firearms). Others, you may have to audit the serial number either against a published list (such as Ruger firearms), or you may have to call the company and have them check their records against your serial number.
Look on the back for manufacturer's serial number and model number.