What is most interesting to me is that someone already did a similar research in the English Wikipedia talk page for that file [1], but concluded that it was in

What is most interesting to me is that someone already did a similar research in the English Wikipedia talk page for that file [1], but concluded that it was indeed Minard's (oops) and the error still persists today. It is really understandable as the presented differences are minor and only discernible for the most determined people though. [1] https://en.wikipedia.org/wiki/File_talk:Minard.png https://en.wikipedia.org/wiki/File_talk:Minard.png (note that it is actually a Commons image, so there are two talk pages for the same file)