Browning.com has a sn function under cusotmer service. You can also get a letter for about 40 USD
My historical references indicate that the Browning light weight (light 12,or light 20) had the gold plated trigger from the time of there introduction.This would be 1947 for the 12 gauge model,and 1958 for the 20 gauge model.
The Browning light weight 12 gauge shotgun was made by FN for browning from 1947-1976.These shotguns were also made by Miroku of Japan from 1976-1998.If you would supply a serial number to your browning shotgun then I would be able to identify the exact year of production.
100-1000+ USD depending on specifics.
You will have to call Browning or provide the serial number.
A copy of the Browning catalog for 2007 would be your best reference
If you mean a Browning B-2000 12 gauge shotgun then the value would be 495 dollars for a shotgun in the condition you describe.
No way to answer without the serial number.
Lets start with the 20 gauge model.The prefix of 8Z to your serial number indicates that your Browning light weight auto-5 shotgun was made in Belgium in the year 1958.The light weight 12 gauge was made from 1953-1976.All light weight auto-5,12 gauge shotguns had a prefix of the letter L,or the letter G from 1953-1958.After words the prefix had a combination of a number and a letter from 1959-1976.This would appear as 8G,or 72G etc.Please check your light weight model auto-5 shotgun for this,and then we can identify the year of manufacture.
The value of a 12 gauge Browning Citori Pigeon Grade is actually dependent upon a number of factors. Some of these factors would be the age and condition.
I thought twentyweight was for (20) gauge.. I assume you are talking about Browning shotguns? The "Double Automatic" was a Browning A5 type of gun that only held two shells. Lighter weight than a standard 12 gauge,maybe as light as a 20 gauge gun. The aluminum receiver would be the main way the weight was reduced on the 12 gauge. I'm sorry I don't have my Browning books handy to give any more info.
I would need to know what model of shotgun we are talking about before I can say when your browning was made.
I would need to know the model of browning shotgun you are asking about,along with the serial number to answer your question.