You will have to call Browning with the sn.
You will have to call Browning to find out what decade
Contact Browning.
Your browning sweet-sixteen was made in 1954.
Call Browning
your sweet 16 was made in 1948
1909
1937
This was made in 1956
The serial number that you have provided,indicates that your Browning sweet sixteen shotgun was made in the year 1954.
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.