Your browning model auto-5 shotgun was made by FN for browning in 1949.
Assuming you mean the Browning Sweet 16, contact Browning Customer Service through their website. Their website also list year of production by serial number range for many guns.
You will have to call Browning with the sn.
Your browning sweet-sixteen was made in 1954.
Call Browning
your sweet 16 was made in 1948
1909
This was made in 1956
1937
Your browning sweet sixteen shotgun dates to the year 1954 with the serial number that you provided.
The 70S prefix dates your browning sweet sixteen to the year 1970.
The serial number that you have provided,indicates that your Browning sweet sixteen shotgun was made in the year 1954.
With the serial number that you provided,your Browning sweet sixteen shotgun was made for Browning in the year 1953.