1968
SN's are available at the Browning website.
The 0s prefix to the serial number indicates that your browning sweet sixteen was made in 1960.
X95029
Browning never used the letter B prefix to there serial numbers.
Every Browning has a serial number on it. The location depends on the model.
All Brownings have serial numbers.
Serial numbers allow for dating when produced.
The serial number is on the receiver.
The letter "k" is not used by Browning in serial numbers.
Check the receiver.
I would go to browning .com.They have a link to serial numbers on the sight that should help you.