Absolutely DO NOT SHOOT THAT GUN! What you have is pristine example of one of the best guns that S&W ever made in my opinion. I have the same gun except in stainless. Keep that thing nice and snug inside a safe and keep it well oiled. Bring it out for photo shoots and bragging rights when you see fit and go to sleep every night knowing that you've got a high quality gun in pristine condition that a lot of other people would love to get their hands on. That includes me too!
Save your money and your change until you can find another Model 19 that has been neglected. Buy it and enjoy the heck out of it like others have done in the past. But keep that little nickel beauty just like it is right now and don't let anyone swindle it away from you. If you're like me, I get easily attached to my guns. Especially the ones that have a sentimental meaning to me. Plenty of people will tell you that a gun is just a tool and is meant to be used. But my guns are more than just tools. They're reminders and keys to the past, to happy times and people fondly remembered. There are plenty of other "tools" that have already been broken in that you can easily enjoy just as much.
Thanks for sharing!