This isn't a Sweet 16 unless the serial number has a letter above or preceding it. Please re-check and give the complete serial number and condition of the gun.
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.
your browning model auto-5 shotgun sweet sixteen was made by FN of belguim for browning in 1967.
Your serial number indicates that your sweet sixteen model Browning shotgun was made in the year 1954.
Your serial number indicates that your Browning sweet sixteen model shotgun was made in the year 1960.
Your serial number indicates that you have a Browning sweet sixteen model auto-5 shtgun that was made in the year 1955.
Your Browning sweet sixteen model auto-5 shotgun was made in the year 1955,with the serial number that you have provided.
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.
The Sweet sixteen name is the model of your Browning auto-5 shotgun!Is the number 51666 the serial number of your shotgun?Please re-post your question so that a answer can be provided.
Your serial number indicates that your Browning sweet sixteen model auto-5 shotgun was made in the year 1951.
With the serial number that you have provided;your Browning sweet sixteen model auto-5 shotgun was made in the year 1955.
Your serial number indicates that your Browning sweet sixteen model auto-5 shotgun was made in the year 1931.
The Sweet Sixteen Shotguns were a model of the Browning A-5 Auto. They were made between 1937 and 1975. That does not appear to be a complete serial number.