1968
Impossible to answer without the serial number.
By the serial number.
Serial number 1
You did not provide a serial number. You will have to call Browning.
Your Browning auto-5 shotgun with the prefix of 70s to the serial number identifies that your shotgun was made in Belgium for Browning in the year 1970.
Made in Liege, Belgium in 1988
Your belguim made browning auto-5 standard weight shotgun was made in 1962.
No serial number provided.
It was made in 1949.
If its a 12ga it was made in 1926 If 16ga, it was made in 1929
Being that you said auto shotgun,then you have the Browning auto-5 shotgun that was made by FN in Belgium from 1903-1975.Your serial number indicates that your Shotgun was made in the year 1938.
Impossible to answer without the serial number.