I recently inherited a nickel finish Colt Viper. It was rare because it was only made for like a year back in the late 1970s and got discontinued because of poor sales. Essentially it's a long barrel D-frame Cobra (aluminum frame). Mechanically fine, still nice shiny nickel and very presentable. Has NOT been shot much, and has been properly cleaned, so no rust. Grips look flawless! Box is showing its age but very intact and all flaps are present.