Off and on for 50+ years
No
Your browning sweet sixteen shotgun was made by FN in belguim for browning in 1960.
1960
The two that start with "0S" are Sweet sixteens made in 1960. The 9R is a Standardweight 16 ga made in 1959.
This is an American Browning made by Remington for Browning. It was made in 1941. auto5man
if your browning 16 ga. has no letter prefix then it was made in 1929.
The Browning made screw in chokes were available for most choke sizes
Made in 1929, this is not a Sweet 16. It is a Standard weight 16 ga. Sweet 16's are the lightweight 16ga model and were not available until 1937.
Browning.com has a sn function under customer service.
If its a 12 ga, then it was made in 1961
That serial number was a 16 ga standard weight made in 1928. It was not a sweet 16. Check your serial number again, what is the letter above or preceding the number?
You will have to call Browning to find out.