There are an extremely large number of possible gold compounds (billions would be a tremendous underestimate). An exact number is utterly impossible to determine.
so far ive seen 6 THE HUMAN TORCH (FROM FANTASTIC FOUR), THE WOLVERINE (X-MEN), THE IRON MAN, SPIDERMAN, THE INCREDIBLE HULK, AND CAPTAIN AMERICA. EACH BLADE IS STAINLESS STEEL AND EACH BLADE BEARS...