It's a model 64 stainless 4" square butt with wooden service stocks in .38 special. Overall it looks good, especially after I cleaned it. Apparrently, it's an ex-Detroit police service revolver as it has "Detroit Police" stamped into the backstrap, however I can't verify that as it came with no documentation. It isn't all that big, but it has a nice rugged, utilitarian look to it. I have no idea how old it is and I really would like to know. Everything appears to be in good shape but since it's been a service revolver, I imagine it's been shot quite a bit. The revolver's innards look especially good although the gun has definitely been carried some as the outside is somewhat weathered, although surprisingly not a great deal, it just has what I like to call "a bit of character". How can I find out how old it is, and whether or not it is capable of shooting +P ammo or not?