Can't be answered without a DETAILED description of ALL markings, finish, overall condition, box, papers, accessories, etc..
@ 400 USD
100-600 usd
100-1000 or more depending on specifics
With the serial number that you provided,your Browning auto-5 shotgun was made in the year 1946.
A billion dollars
$300-$400.
50-550 usd
YOu must call Browning.
Browning.com has a sn function under customer service
The 4V prefix to your serial number indicates that you have a Browning auto-5 Magnum shotgun made by FN of belguim,in the year 1964.
A semi-automatic shotgun.
With the serial number that you provided,your Browning standard weight 16ga auto-5 shotgun was produced in the year 1961.