You will get more info in the post 1980 forum. I wouldn't call them rear, but you don't see them come up for sale every day either. Very nice revolvers!
Congratulations! I still don't have a .44 Magnum! I go back & forth whether I need 1 or not. Have my .45's though. Post some pictures, so we can drool over it! Bob
"It is a non-fluted 5" with hogue grips."
That certainly sounds like the limited edition one made for Hill Country Dis. in Texas. And as mentioned above, as few as 500 made.
I never could find one so I made my own years ago when the parts were still available from S&W. It is a well balanced and very accurate .44. One of my favorites.
Mike