100-10000 depending on specifics.If you have the standard grade Browning BAR in this caliber it will bring between 450-650 dollars if it is between 60%-90% original condition and has a good bore.
10-1000 USD depending on specifics
1971
what model of browning semi-auto shotgun are we talking about?I show no B prefix to the serial number on the browning auto-5 shotguns made.
The 71V prefix to the serial number indicates that you have a browning auto-5 magnum shotgun that was made by FN in belguim for browning in 1971.
The suffix of M71 was assigned to the Browning model BAR(Browning semi-auto rifle) which was made in the year 1971 in Belgium for Browning.
Not sure what you describe as "Century". The only semi-automatic produced by Browning at the time was the Auto-5. Based on condition of your gun, look it up at the link below.
50-500 USD or so
your browning auto-5 was made in 1927.
50-500 usd
With the serial number that you provided,your browning auto-5 shotgun was made by FN of belguim for browning in 1907.
1971. is it a sweet 16?
Impossible to answer without a detailed description.