I agree with SDC, but will add that that company's revolvers were among the better Spanish revolvers of the era. At least they put their name on it, which most makers didn't do, and used reasonably good steel instead of the cheap cast iron used by others.
The .32-20 was fairly common as a revolver cartridge at that time, and both S&W and Colt chambered revolvers for it, but the Spanish makers got into it in a sort of backward way. They made revolvers for the French during WWI in 8mm Lebel. After the war, they wanted to get into the U.S. market and it took only minor changes to make the guns in .32-20.
But I do suggest the gun be treated as a wall-hanger and not fired.