@ 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 shotgun was made in the year 1961 with a prefix of 1G.
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 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.