A copy of the Browning catalog for 2007 would be your best reference
If you have a 12 gauge model auto-5 Browning shotgun?Then it was produced by FN of Belguim for Browning in 1923.If you have the same shotgun in 16 gauge,then it was produced in 1928.
Your browning auto-5 shotgun in 16ga. was produced by browning in 1953.
Your browning auto-5 shotgun was produced in 1953.
Citori, 20 gauge, superlight and upland models
With the serial number that you provided,your Browning 16 gauge shotgun was produced in the year 1949,by FN of Belguim for Browning.
The 2 letters MM indicate that your Browning shotgun was produced in the year 2000.
With the serial number that you provided,your Browning 16 gauge auto-5 shotgun was produced in the year 1929.
With the serial number that you provided,your Browning 16 gauge auto-5 shotgun was produced in the year 1935.
With the serial number that you provided,your Browning model auto-5 shotgun in 16 gauge was produced in 1956.
Not enough information as Browning made dozens of different models. You need to determine the model number then go to Brownings web site to date your gun. The link is shown below.
With the serial number that you provided,your Browning auto-5 shotgun was made by FN of Belguim for Browning in 1926 if you have a 12 gauge model.If you have a 16 Gauge model then it was produced in 1929.
That is an 'American Browning' produced by Remington during World War II.