This film was one of the very last 'spaghetti-westerns' to be produced and filmed by a major European studio.
Geoffrey Lewis' voice was dubbed by another actor in the English language version.
It was illegal at the time of the 0ld West to marry your niece or nephew under normal circumstances. However, in one case here in Canada, a marriage between an uncle and niece was upheld because they were of no biological relation to each other; one of them - the niece, presumably - was an adoptee.
Italian censorship visa # 71727 delivered on 1 April 1978.