Browning.com has sn data under customer service.
Try asking for info based on the model and serial number
Need a detailed description of all features, caliber, finish, sights, stock/grips, etc..
Browning.com has a sn function under customer service.
No way to answer since a serial number was not provided.
Most FN production records from WW 2 and earlier were lost during the war.
Your Browning auto-5 magnum shotgun was made in Herstal,Belgium by the firm FN(Fabrique Nationale)for Browning in the year 1965 with the serial number that you have provided.
Made in 1969, this gun was manufactured in Liege Belgium at the Fabrique Nationale Firearms plant.
Basically impossible to value with just the serial number.
I can say that it was made after 1977, but for more specific information, you will have to contact browning customer service.
1984
You MUST call Browning.
The 5G prefix to the serial number indicates that your browning was made by FN of Belguim for browning in 1965.