Cronica de un atraco - How do i buy or find better quality version of this movie

[Male Navel]

So this is Cronica de un Atraco from 1968. There is this gut stabbing scene with scissors (possibly in his navel) at 1:17:54 and it drives me insane. He even falls down the stairs with the scissors still in his navel and its super hot. But the problem is it is so pixelated i can't exactly make out everything. I can't find this movie in a better quality anywhere for streaming like Amazon. Am i missing something? I know myself, and I NEED to see this scene like its meant to, otherwise ill be torturing myself. So If anyone can find a link where to buy it or see it in better quality ill appreciate it immensely. 
This is a different cut of the movie, you can see he scissors in his navel better, but still not good enough.

Thank you.

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This is him falling with the scissors in his navel but its so damn pixelated! Otherwise its the perfect scene for me.