The serial number is not complete. There should be a letter or letter/number combo above or preceding this serial number. Search the Blue Book of Gun Values to find a value
Usually located on the frame/reciever and/or barrel.
Your serial number indicates that your Browning light weight auto-5 shotgun was made in the year 1971.
100-500 USD depending on condition.
You will have to call Browning to find out.
The barrel will have 'Made in Belgium' on it. The receiver can be dated by serial number.
Your browning model BAR which was made in 1985 should say either made in belguim on the barrel,or made in belguim assembled in portugal on the barrel.
1966 was the year of mfg.
50-800 usd
100-1200 usd
Your browning 16ga was produced by browning in belguim in 1949.
Browning.com has sn data under customer service.
No such weapon made by Browning.