I'll try to do it justice in a comment but the book is here: "Van Gogh's Ear: Paul Gauguin and the Pact of Silence," by Hans Kaufmann and Rita Wildegans
A lot of circumstantial evidence but it's pretty telling. Paul Gauguin was an expert swordsman who carried a particular sword with him at all times. He and Vincent would have terrible fights when they lived together in Arles. We know that Paul was scheduled to move away the next day and that night they had a big fight and that Paul left town immediately in a rush leaving his sword behind. The new evidence that was found recently is a doctor's rendering of the cut ear. It's an extremely clean cut from the top, straight down.
There's more to it but those are some interesting details.
A lot of circumstantial evidence but it's pretty telling. Paul Gauguin was an expert swordsman who carried a particular sword with him at all times. He and Vincent would have terrible fights when they lived together in Arles. We know that Paul was scheduled to move away the next day and that night they had a big fight and that Paul left town immediately in a rush leaving his sword behind. The new evidence that was found recently is a doctor's rendering of the cut ear. It's an extremely clean cut from the top, straight down.
There's more to it but those are some interesting details.