50-500 usd
Your Browning sweet sixteen shotgun was made by FN of belguim for Browning in the year 1951.
55-550 usd
Your browning sweet sixteen shotgun was made by FN of belguim for browning in 1961.
Your browning sweet sixteen shotgun was made by FN for browning in 1928.
Your browning sweet sixteen shotgun with a 5s prefix dates your shotgun to the year 1965.
Gold plated. Less than 1/10 of an ounce
A5
Browning.
That is not a Sweet Sixteen serial number.
The serial number prefix 1S was assigned to the browning sweet sixteen model of the auto-5 shotgun in the year 1961,So yes you have a Browning sweet sixteen shotgun.
With the serial number that you provided,your browning sweet sixteen shotgun was made by FN of belguim for browning in 1928.