With the serial number that you provided,you have a Browning sweet sixteen model auto-5 shotgun that was produced in the year 1957.
YOu must call Browning.
your browning auto-5 was made in 1951.
Your Browning auto-5 magnum shotgun was made in the year 1960.
1976
1928
1925
No serial number provided.
your browning auto-5 was made in 1925.
This gun was made in 1961
made in 1958
1978
1973