Provide the sn.
1969
You can't
Depends on when it was made.
All Brownings have serial numbers.
Depending on who made it, they may or not be published. And, depending on when it was made, they may or not exist. Serial numbers were not required on long arms in the US until 1969.
Between 1967 and 1969 and where hand made and engraved "Custome Made for _______ _________. They only made 2 in the 1960's for 2 brothers. The Y serial number stood for Trap and Skeet matching barrels manufactured with matching serial numbers. Before the serial numbers starting with a T stood for trap and staring with S stood for skeet barrels. When they came up with the Y serial number, it was designed for trap and skeet matching barrels.
Serial Numbers 115351- 157150 where made in 1947
Serial numbers were not required until 1968
Comparison to known serial numbers.
Serial numbers on firearms in US were made mandatory by the Gun Control Act of 1968.
No way to tell. Serial numbers are NOT unique to only one gun, or they would be billions of numbers.
Made in 1951 - There were 8,011 made that year, serial numbers #62,629 - #70,639