No way to value with only the serial number and no other descripitve information.
if you are asking about a browning auto-5 shotgun?The year of production of your browning shotgun is 1928.
With the serial number that you provided,your Browning auto-5 shotgun was produced in Belguim by FN for Browning in the year 1951.
With the serial number that you provided,your Browning auto-5 12 gauge shotgun was made by FN of Belguim for Browning in 1947.
50-500 usd
With the serial number that you supplied,your Browning 16ga auto-5 shotgun was made in the year 1948.
$89.99
50-500
See the Browning website- customer service. Date of prodcution by serial number listing.
ojn the bottom of the receiver
1951
100-600 USD
50-400 usd