Browning.com has a sn function under customer service
Your serial number indicates that your sweet sixteen model Browning shotgun was made in the year 1954.
Your browning sweet sixteen was made by FN of belguim for browning in 1924.
1924
Your browning sweet sixteen was made by FN for browning in 1951.
The 0s prefix to your serial number sets the date of manufacture of your Browning sweet sixteen shotgun to the year 1960.
Could you look and see if there is a prefix letter,or a number letter combination prefix to your serial number?this would aid greatly in establishing the year of manufacture of you browning sweet-sixteen.
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.
This was made in 1958.
Browning's web site has a sn search function.
Your browning sweet-sixteen was one of the last six shotguns made by FN of belguim for browning in 1949.
You will have to call Browning.
1964