@ 1925.your Browning auto-5 shotgun which was made by FN of Belguim could have 2 different year of production.Because you did not state the gauge of your shotgun,if it is a 12 gauge then it was produced in 1907,if it is a 16 gauge then it was made in 1923.
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your browning auto-5 was made in 1925.
If you have a Browning auto-5 shotgun in 12ga,then it was made in the year 1925.If you have a 16ga shotgun then it was made in 1929.
Your Browning auto-5 magnum shotgun was made in the year 1960.
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.
Your shotgun was made in the year 1961 with a prefix of 1G.
Your browning auto-5 shotgun was made in 1951.
your browning auto-5 shotgun was made in 1952.
your browning auto-5 shotgun was made in 1929.
With the serial number that you provided,your Browning auto-5 shotgun was made in the year 1946.
Your serial number indicates that it was made in the year 1966.
Your serial number indicates that your Browning 16ga.auto-5 shotgun was made in the year 1939.