1983 mfg date.
1926
1953
1987
1971
The Browning web site has sn data as does proofhouse.com. You can also call Browning and ask.
Your browning lever action 22 was made in 1976.
This gun was made in 1968
1986 mfg date
This is an Auto-5 Browning made in 1953
We can answer it here on Wiki, or you can go to the Browning link below.
Your browning sweet sixteen shotgun was made by FN in belguim for browning in 1960.