Google "stock makers".
It shouldn't say light twelve on the barrel, but on the receiver. Light twelve means that the gun is a light weight version of the standard Auto5 shotgun.
Good shotgun
1943 browning light 12 belguim made $5K
If you own the browning light 12 with a plain barrel then 340-450 dollars based on the shotgun having between 60%-90% of its original finish remaining.If you have the vent rib barrel then 415-630 dollars.
The light twelve refers to this shotgun being a light weight model of the Browning auto-5 shotgun.The difference in weight was 10oz.
Your serial number indicates that your Browning light twelve auto-5 shotgun was made in the year 1955.
A shotgun in 12 gauge.
100-500 usd
Your Browning light twelve shotgun,not rifle is valued at between 300-550 dollars for a shotgun with between 60%-90% of its original finish remaining,and a good bore.
Frame
A lightweight 12 gauge shotgun.