This isn't a great example because da Vinci was a famous historical figure and lived 500 years ago. Just the history of a real da Vinci is remarkable, regardles

This isn't a great example because da Vinci was a famous historical figure and lived 500 years ago. Just the history of a real da Vinci is remarkable, regardless of the artistic merit. A more interesting example would be a convincing fake purported to be painted by a highly regarded artist who's still living and working today, and this does happen, too.