The shot with the chewing of the cigar was not present both in the 1998 DVD and in the 1993 LD.

The shot with extra waiting for the cannon to fire seems to actually be in the 1993 LD, as I didn't have to extra sync this scene.

The shot of Blondie turning longer around to Tuco (as he rotates his spur) was neither in the 1993 LD nor in the 1998 DVD.

I wouldn't go so far as to judge which shot belongs and which does not. I am also puzzled as to why Leone removed the "Sorry Tuco" bit from the Italian version and kept it in the international one (as it still seems present in the neg).