1903-1939. Value depends on condition. Your definition of excellent might not mean excellent in terms of collectable Browning shotguns. Broad range; a couple of hundred to a couple of thousand.
1k give or take a few hundred
150 USD
500 USD
$400-$500 in excellent condition.
400 or so
300-500 USD.
with these fine made Belgium shotguns,condition is everything in the value of your Browning Sweet Sixteen shotgun which was made in Belgium in the year 1957.They can be worth between 300-1,200 dollars if the original condition is quite prevalent and the bore is in excellent condition.
You will need to conatact Browning and order a letter from them
050-1000 usd
Impossible to answer without a detailed description and the serial number.
I am going to assume that we are talking about a Browning A-bolt rifle.If yours is in mint condition,I wouls assign a value of between 300-400 dollars.
About $550 for plain barrel, $850 for vent rib. This is for EXCELLENT condition, lesser condition less $$$.