+1 to ALL the above posts....
Hmm, is it a .22, .30, .357, .41, .44, or a .45? Does it have an extra cylinder? What kind of grips are on the gun? Black Plastic? Varnished Walnut? Oiled Walnut? What medallions are in the grip panels? What style is the base pin? Collared, non-collared? How about the Base Pin Latch? Screw heads on both sides or screw head on one side and a "spanner" style on the other? What sights are on the gun? Micro made or "plain/Ruger" made? Is the top strap Flat or is it raised up a bit around the rear sight?
That's a few of the questions we need answered to properly evaluate your Blackhawk, if you please?
Or, a couple of pictures can do wonders....
Oh, and Welcome to Ruger Forum!
flatgate