I just bought a Model 28-2 serial # S325xxx. Can anyone help with when it was made? It is a 6 inch. blue, nice shape, just a little holster wear. Locks up nice and tight. Target hammer, p&r. Missing the factory grips, but has a nice pair of checkered wood aftermarket grips on it. I will find a good set of factory targets for it. I paid $275.00 for it. Good deal? Thanks for any info.