Impossible to answer since you did not provide the serial number.
Your belguim made browning auto-5 standard weight shotgun was made in 1962.
Your serial number indicates that your Browning standard weight 16 gauge auto-5 shotgun was made in Belgium in the year 1947.
Your serial number indicates that you have a standard weight Browning auto-5 shotgun that was made in the year 1958.
Your serial number indicates that your Browning standard weight auto-5 shotgun was made in the year 1952.
47571.With the prefix of 1M to your serial number;this indicates that you have a Browning standard weight auto-5 shotgun which was made in the year 1961.
With the serial number 2m-83490,you have a Browning auto-5 standard weight shotgun that was manufactured in Belgium for Browning in the year 1962.The value will range in price from 375-550 dollars,depending on the overall condition of the shotgun and a good bore.
Check the barrel and receiver
Impossible to answer without the serial number.
With the serial number that you provided,you have a browning auto-5 standard weight shotgun that was made by FN of belguim for browning in 1955.
could be the serial number or an assembly number.
Entirely possible.
1968