Your serial number indicates that your Browning light twelve was made in the year 1955.
your browning auto-5 light twelve gauge was made in 1960.
1954
You will have to call Browning with the serial number.
1979
1958
Call Browning.
This gun was made in 1953
Your browning light twelve was made in 1972 as the number prefix suggests.
@ 33 years old
This gun was made in 1963. It is a "Light Twelve" model
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