Value is too difficult to be accurate without seeing the gun. Condition which includes the amount of original finish and original configuration will determine value. Condition and age is also a factor. Auto 5's with recoil pads (other than Mag 12's) poly-chokes and compensators will reduce value. Recommend taking it to a gun shop for 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
250 USD or so
If your shotgun is a auto-5 it is worth between 250-550 dollars depending on the amount and condition of the remaining finish left.
50-600 usd
375-550 dollars, depending on overall condition of your shotgun.
100-10000 or more depending on model
Requires professional evaluation.
100-10000 USD depending on specifics
50-500 usd
Its about $550 @ basspro
Most Browning guns were made in Belgium by Fabrique Nationale (FN) until the mid 1970s when some production was shifted to Miroku in Japan. Today's Browning firearms are made in either Belgium, Portugal, Japan or in the United States.
50-500 uSD
Impossible to answer if you don't at least say if it is a rifle, shotgun or handgun.