Underrated westerns

I have a feeling that one particular western is not appreciated enough. I am referring to Marlon Brando's One-Eyed-Jacks (1961) with  Marlon Brando, Karl Malden and Katy Jurado. Although, it won the first prise at the San Sebastian film festival, it was still soon forgotten.  Running from the law after a bank robbery in Mexico, Dad Longworth (Malden) finds an opportunity to take the stolen gold and leave his partner Rio (Brando) to be captured. Years later, Rio escapes from the prison where he has been since, and hunts down Dad for revenge. Dad is now a respectable sheriff in California, and has been living in fear of Rio's return. Malden plays an unforgettable villain.
 The western is quite different from all the others filmed at the time. In the best sence.
 It is interesting noting that (as usually) the (painted) posters for the foreign markets are much better than the ones printed for the American one. I suspect they were ppainted by the local artists. The top one was for ex Yugoslavia (distribution: Croatia film), and the bottom one is for the Italy. I prefer the top one.