Browning has sn data on their website. 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(s) is/are 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 browning sweet sixteen was made by browning in 1961.
Your browning sweet sixteen was made by FN of belguim for browning in 1966.
your browning sweet-sixteen with the serial number you provided was made by browning in belgium by FN in 1956.
What_is_the_value_of_a_Browning_Sweet_Sixteen
Check the Browning web site or call them
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 3S prefix to your serial number,I can say that your browning sweet sixteen was made in 1963.
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.
No serial number given.
Your browning sweet sixteen was produced in 1953.
You will need to call Browning.