This sounds like a Browning Auto-5 Light 12 model with a serial number that starts with "L" and 437 is part of the serial number as well. Please provide more info
Your serial number indicates that your Browning light twelve auto-5 shotgun was made in the year 1955.
This gun was made in 1956
Made in 1954. Depending on condition $400-$1200
Your Browning light weight model auto-5 shotgun should have the letter L ahead of this serial number(L4968).If so,this indicates that your shotgun was made in the year 1954.
If you own a model auto-5?Then I show your serial number indicates a standard model in 12ga that was made in 1953.If it is a light twelve it should have a L prefix to the serial number.
Browning.com has sn data under customer service.
Browning.com has sn data under customer service. 100-400 USD
The "L" prefix to the serial number for a lightweight was used only in 1954-1955. Following year it changed to the letter "G".
If your Browning light weight auto-5 shotgun is a light weight model,your serial number will have a prefix of the letter L,or letter G,or a combination of number and letter such as 8G.or 69G etc.If you have no letter prefix,or number,or number letter combination.Please re check and post a correct full serial number to get the correct year of manufacture.
While you do not say what model of browning you have?The L prefix was assigned to the browning auto-5 light weight shotgun.Your serial number indicates that your browning light weight auto-5 shotgun was made by FN of belguim for browning in 1953.
You can access the date of manufacture of many Browning firearms at the Browning website, under Customer Service.
Gary L. Browning was born in 1940.