1995
1953
mfg 1990
You will need to include a serial number to have your question answered.
1986 mfg date
Your browning sweet sixteen shotgun was made by FN in belguim for browning in 1960.
You did not provide the serial number. You will need to call or visit the Browning web site.
mfg in 1967
try dating it at the browning website: http://www.browning.com/customerservice/dategun/index.asp
Your browning sweet sixteen shotgun dates to the year 1954 with the serial number that you provided.
that depends on the year of mfg. the code changed frequently
The NV probably indicates a 1995 MFG date.
FN