100-400 or so
50-500 usd
Browning did not make the Model 11, Remington did. If you have a Remington Model 11 in 16ga, value is between $150-$450.
Generally not - Remington changed the shotgun several times over the years and you must inspect carefully to ensure it will fit. When in doubt, consult a gunsmith.
The Montgomery Ward Western Field 16 gauge 550b shotgun is valued at $200 in excellent condition. Fair condition value is $75.
About $325 in excellent condition - $30 apiece for the vent rib barrels
500 dollars
Lookup date code on Remington Society of America here: http://remingtonsociety.com/rsa/questions/barrelcodes
100 or so
The value is $40-$150 depending on condition, location, need etc.
50-100 USD
50-100 USD or so
0-500 usd