I just rewatched this one, via the NEW DVD (and very nice it looks, too).
I don't have much to add to Scherp's typically insightful review, but I enjoyed the film more this time round than when I first watched it, no doubt helped by the enhanced presentation.
For a 1967 production, it is remarkably traditional and tame - yes, the beatings are occasionally savage, but ultimately even the main villains are spared death. Serge Marquand is ridiculed rather than riddled with bullets, and Daniele Vargas disarmed by a woman.
Of course, this lightness of tone, relatively speaking, helps to unite it with Adios Gringo and One Silver Dollar, but they were made two years earlier. The complexion of the Euro-Western as a whole had changed considerably in the meantime, but you would never guess that from the evidence here.
The direction is mediocre, but Gemma is solid, the location work is fine, there are a few pleasing gimmicks (I liked the modified branding irons that facilitate Vargas's rustling racket), and, of course, Nello Pazzafini's cameo is a delight.
The much-feared Mexican bandit gang, though, is an embarrassment. They make a very poor show of themselves. Fernando Sancho would be disgusted with them.