Three stars for a workmanlike western. Four stars for Morricone's sublimely weird score.
Despite many clunky, meandering scenes (approximately 75% of the movie), there are many moments at the beginning and a few later on (like the one highlighted in the accompanying image) when Morricone's mastery and Lee Van Cleef's presence epitomize macho, badass cool.
Routine Spaghetti Western. Roger Ebert's 1969 review includes this canny observation: "Van Cleef's face, in closeup, has the lean, hardened, embittered expression of a man who has either (a) been pursuing his lonely vengeance across the plains of the West for 30 years, or (b) realizes he will be making spaghetti Westerns the rest of his life."
Other than the Leone and Corbucci spaghetti westerns, this is as good as they come. One of the definitive revenge movies.