Price range can vary from 100-5000 USD
it can range from a price of 10,000 to up to 1$
With no other information the price range can be 500-5000
This almost entirely depends on the condition of the firearm and cannot be determined just by stating the caliber and manufacturer alone. That said, the price range for a Smith and Wesson .357 magnum revolver in good condition could be from 250 to 1000 US dollars.
The only model that Browning made that comes close to your question is the model B-80.These range in price from 230-300 dollars.As far as my research indicates,Browning never has produced a model 8 shotgun.
Depending on overall condition,your Browning auto-5 shotgun can range in price from 350-550 dollars.
these will range in price from 300-475 dollars,depending on overall condition,and a good bore.
With the information provided, price range of 500-1500
You will have to find 1989 price sheets, catalogs for a definitive answer. It was in the 700-900 USD range.
I will assume you meant to say Belgium vs England. Go to the link below to learn about Belgian Browning 16ga Values.
In the condition that you describe,the value will range in price from 450-550 dollars.
Your Browning A-500 hunter will range in price from 275-375 dollars for a shotgun showing between 60%-90% of it,s original finish and a good bore.