What's the brand? You may wanna get it checked out before shooting it. The Germans made some real ****** guns back then.
Thanks Scooter, for a very informative responseLooking at the pictures posted in the Firing Line Forum that actually looks like a fairly true clone of the Single Action Army. It's also quite obvious that the frame of the revolver isn't zinc as claimed by a few in that thread but Steel. However the thumb latch is rather obviously a zinc alloy, probably good old Zamak. The sring housing under the barrel is also likely to be Zamak so overall it's not a high quality clone. However I do expect that it's perfectly safe to shoot as long as you adhere to the safety protocol for the Single Action Army. Which BTW, means you have the hammer resting on an empty chamber anytime it's not aimed at a legitimate target.
Now, about your grip issue. The grips that were displayed in that series of picture are rather clearly marked for the Colt SAA. This means that any grip intended for use with the SAA should fit your grip frame with just a bit of fitting at most. I would suggest looking at the Hogue, Pachmayr, and Eagle web sites because between these three grip makers you'll probably be able to find something within your budget.