Browning.com has sn function listed under customer service.
no
They came in different lengths.
Check the receiver, barrel
Although both are interchangeable, a true Sweet 16 barrel will have three holes drilled through the barrel band. This was one of the ways Browning lightened the barrel. The rib will also be a smidge thinner than on a regular barrel.
take it to a gunsmith
$150 - $400 depending on condition and year made (barrel markings determine the period when the barrel was made)
your 1953 browning sweet sixteen if it has a plain barrel would be worth between 500-950 dollars depending on condition,if it has a vent-rib barrel it would be worth between 775-1300 dollars again depending on condition.
Your Browning sweet sixteen auto-5 shotgun was made in the year 1948.
See the link below
Will be hard to find, and expensive. Do an internet search for Corson's Barrels.
They used stars to show how the barrel is choked. 1 star is for full, 2 for modified, and so on down through the chokes.
Good luck! I would start my search at either Numrich gun parts corp.or maybe gunbroker.com.Either way in may prove to be rather difficult to locate a original sweet sixteen shotgun barrel for your browning.