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This Shotgun was made by Stevens their model. 520. Made from 1930's to 1950'S Although the shotgun was Browning patent marked, it was not made by Browning.
If it is a Superposed model 1951.
You will have to provide the exact model.
Impossible to answer without knowing the model.
Your browning model auto-5 shotgun was made by FN for browning in 1949.
What model is this for? The serial number is not a Auto-5 number of Browning Arms Co. What model is this for?
If you are asking about a Browning auto-5 shotgun with the serial number 53100 then it was made in the year 1921.If it is a another model please specify the model and I will be able to help you date your shotgun.
I have no records of a Browning 16ga shotgun having a A prefix to the serial number.Please check and list the model number(or name model) of your shotgun in your next post.
You have a Browning auto-5 standard model shotgun in 16 gauge that was made in the year 1949.
Your Browning standard weight model auto-5 shotgun was made in the year 1954 with the serial number that you have provided.
Impossible to answer with just the serial number
No way to answer without knowing the model.