1983 mfg date.
p=8 x=3
2003
1977
83
With the serial number that you provided,your browning auto-5 shotgun was made in 1925 if you have a 12ga.shotgun.If your shotgun is a 16ga shotgun then it was made in 1929.
1993
1990.
1991
Your browning auto-5 shotgun was made by FN of belguim for browning in 1947.That makes your shotgun 64 Years old.
This Browning shotgun you describe was made in 1959.
You will need to call Browning.
You will need to call Browning.