My uncle is visiting and was telling me about this particular gun he has. He has sold guns for many many years, and this is one that he has had for 15-20 years he said. He is 80 yrs now and no longer shoots, and I am thinking about offering to buy it from him; two reasons, to give it a good home, and it would also be nice to have a gun belonging to my uncle who also loves firearms. It is stainless and in the original box. This is all that I know. How much is it worth?? HOw much should I offer him??