Determining value invloves many different pieces of information which you did not provide. Condition is usually the most important. The type of finish, features, wood used in the stock, what the barrel is choked, barrel length, gauge, accessories, any engraving, presence of origianal paper work and box also come into play. Total production is a factor too. Without a detailed description, 100-1000 USD, maybe.
Your sweet sixteen browning auto-5 shotgun was made by FN for browning in 1963.
You did not provide a serial number. You will have to call Browning.
With the serial number that you have provided,your Browning Sweet Sixteen auto-5 shotgun was made in Belgium for Browning in the year 1957.
With the serial number that you have supplied,your Browning Sweet Sixteen model auto-5 shotgun was made in Belgium for Browning in the year 1953.
With the serial number that you have provided,your Browning sweet sixteen auto-5 shotgun was made in the year 1956 by FN of Belgium for Browning.
The prefix of 2S indicates that you have a Browning Sweet Sixteen auto-5 shotgun that was made in Belgium for Browning in the year 1962.
Your Browning sweet sixteen shotgun was made by FN of belguim for Browning in the year 1951.
With the serial number that you provided,your Browning Sweet Sixteen shotgun was made by FN of Belguim for Browning in the year 1949.
100-10000 USD or more depending on specifics
Browning's web site has a sn search function.
The Browning Sweet 16 is a 16 gauge shotgun manufactured in Belgium. It uses a true 16 gauge barrel and as such is a wonderful shotgun. To a hunter this is a sweet weapon.
Your browning sweet sixteen shotgun was made by FN of belguim for browning in 1961.