Your browning auto-5 shotgun was made by FN of belguim for browning in 1957.
If your browning 16ga shotgun is a auto-5 then it was made by FN of belguim for browning in 1927.
Your sweet sixteen browning auto-5 shotgun was made by FN for browning in 1963.
FN is the abbreviation for Fabrique Nationale Arms Co. of Herstal, Belgium. They made most of the A-5 shotguns and Superposed shotguns for Browning USA.
The 0G prefix indicates that you have a Browning Light weight auto-5 shotgun,chambered in 12 gauge.This Browning shotgun was produced by FN of Belguim for Browning in the year 1960.
With the serial number that you provided,and assuming that we are talking about a browning auto-5 shotgun then your shotgun was made by FN of belguim for browning in 1909.
FN
Your browning model auto-5 shotgun in 16ga.was made by FN of belguim for browning in 1951.That makes your shotgun 60 years old.
If you have a Browning auto-5 shotgun in 16 gauge(you do not state)then it was made in the year 1928.
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.
With the serial number that you provided,your Browning Sweet Sixteen shotgun was made by FN of Belguim for Browning in the year 1949.
You will have to call Browning to find out.The serial number prefix of 6V indicates that you have a Browning auto-5 shotgun that was made in 1966,and the letter V indicates that you have a Magnum model auto-5 shotgun.