It does depend on who’s buying it. There is no master key to the prices of antiques. If you want to get an idea of how much it’s worth, you have it appraised by an expert. They can give you an average price they think it would bring if sold at auction or to a dealer, and can also tell you how much you should insure a valuable antique for. To get it appraised, try contacting a local antique store. If they don’t have an expert there, they should be able to recommend one locally.