Those stocks are unrelieved diamond targets. They would fetch at least a couple-three hundred on their own. (I am not up on market values for these.) It looks like they have the blue stuff from the presentation case on them, which may clean off easily. Be gentle, maybe an old toothbrush would brush it out of the checkering.
So that is a Model 28 no dash? Again, I apologize since I don't know the market, but I believe the gun ITSELF, sans stocks, sans box, has a ballpark worth of what Series Guy said. To me, the whole package would easily go for over a grand.