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Honestly if we want be fully correct we should look to the original sources i.e. portrait and Jagielonian University custody. It is worth something if we want prove the corect name of his - written in Latin would be Copernic not Copernicus. It is worth to see on the handwritten signature, already included in article. See also the cover page of ""De revolutionibus"" the name is Copernici.74.213.188.138  "