A "restoration" could be done by S&W, putting it back to its original finish. However, since it's been refinished once, you will only have a gun with a bit less metal overall.
You should call S&W, and discuss with them. They'll advise you of the cost (guessing somewhere north of $250), and of what the refinish will consist. Any refinish will not bring it back to original factory condition. The roll marks and stamps may, or may not, be able to be redone.
You'll then need to weigh the risk vs. reward. I don't know what you paid for the gun, but it's unlikely that anything you invest will get your money back, if you decide to sell it.
If it were my revolver, I'd keep it as is, and enjoy it.