1968
Impossible to answer without the serial number.
By the serial number.
Serial number 1
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.
You did not provide a serial number. You will have to call Browning.
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.