In order to answer your question,you must include the Make of the shotgun,the model number,and serial number.
No published data.
Is it a pump, bolt, over/under or semi-auto?
your Winchester model 12 pump shotgun was made in 1936.
In order for me to answer your question,I will need some more information from you.First is this shotgun a semi-auto,pump action,or over-under shotgun.I will need the model of shotgun.Then add the shotguns gauge(12 gauge,16 gauge,20 gauge)? I will need the serial number of your shotgun to date the year of manufacture.If you provide this info,I can then tell you how old your Browning shotgun is.
Depends on your parents
With the serial number that you provided,your Winchester model 1912 pump action shotgun was made in the year 1961.
how old is a national firearms 12 gauge shotgun serial number A23163
Impossible to answer without knowing who made it.
87 years old.If you have a 12 gauge shotgun then it was made in 1906,if your shotgun is a 16 gauge,then it was made in the year 1919.
That is a very early serial number!If you have a auto-5 12 gauge shotgun,then the year of manufacture is 1904.If you have a 16 gauge shotgun,then the year of manufacture is between 1910-1912.
In order to answer your question correctly,I would need to know the model of Winchester shotgun that you are asking about and the serial number of the shotgun in question.