1952
Your browning model auto-5 magnum 12ga shotgun was made by FN for browning in 1965.
no serial number = no way to answer.
Should be a 12ga made in 1951.
Browning's web site has a sn search function.
Your browning auto-5 12ga lightweight shotgun was made by FN for browning in 1967.
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.
Auto-5 Lightweight 12ga made in 1960.
I will need a serial number to your auto-5 shotgun to get you the correct answer to your question.
No
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 light weight 12ga shotgun was made by FN of belguim for browning in 1954.
Call Browning and give them the sn and they can tell you