You will need to supply the serial numbers to your shotguns to get the age of your browning shotguns correctly.
This cannot be answered without a detailed description of the shotguns condition.
Besides a number of books published on Browning, and some of the gun collector forums (google Browning collectors) you might start with Browning. They have a website, and are still in business making very nice rifles, shotguns, and pistols.
The browning auto-5 shotguns are going for anywhere from 375-650 dollars depending on condition.
They will have "Made in Japan" on them somewhere. Value will depend on exact configuration and condition.
If you have the money.....
All Browning B-2000 shotguns were Belgium manufacture but assembled in Portugal.
This cannot be answered without a detailed description of the shotguns overall condition and age.
Yes.All Browning shotguns made prior to the year 1976 were Belgium made shotguns.
Your 1963 made Browning light weight 12 gauge shotgun cannot be given a value,without you providing a more detailed description of the shotguns overall condition;to include the metal finish,wood condition and the condition of the shotguns bore.Please include whether you have a plain barrel,solid matte rib,or vent rib barrel.
Belgium and Japan.
What do you want to know?
It will depend on the specific model and its condition. A quick look at the GunsAmerica.com site shows Browning Sweet 16 shotguns listed for anywhere from $650 to $2500.
The FN Custom Shop is still making High Grade Over/Under Shotguns. Contact Browning for details
The Miroku shotguns will typically bring 80% of the value of a Browning Citori in similar condition.