This question can't be answered without more detail. However, if you look in Standard Catalog of Firearms, you may be able to identify it and find the approximate value. Or, you might contact Browning at 1-800-333-3288. This gun was made in 1947. As with any firearm, it is not possible to accurately appraise a gun without seeing it. Recommend that you see a local gun dealer for an appraisal. You can also do your own investigation by looking at other models being sold that are in the same condition as yours. Try the gunbroker.com or a periodical called "The Gun List" You can also reference the Blue Book of Gun Values which can be purchased on line at various retailers.
Basically impossible to value with just the serial number.
You will have to call Browning with the sn to find out.
A billion dollars
100-1000 depending on specifics
r Requires appraisal
If not OEM, yes
50-500 USD or so
No such A5 model number.
50- 550 usd