Have an opportunity to purchase a Colt Detective Special (Nickel) in pristine condition. Came out of a private collection, with box, hang tag. This gun glistens. Could not see a single mark or blemish. Wants $650.00 for it. Will hold the gun until Monday for me to think about it. Another question I have is about nickel. Never owned a nickel plated gun. Any special care, problems, etc that I need to know about. My only background is with blued and stainless Colts. Am comfortable with care of these metals, but the nickel has me concerned. Maybe not an issue. I knew you guys could help me out on both asking price and nickel care. Thanks !!