If you really care about keeping your gun looking as close to its original state as possible, you might want to think about getting it professionally re-blued instead of going the Cerakote route. There are some great gunsmiths out there who focus on hot salt bluing and rust bluing, and they can work their magic to bring your worn S&W back to almost factory fresh. Sure, it can be a bit pricier than Cerakote and it might not hold up as well over time, but it really does a fantastic job of preserving the gun’s character and its value.