Coins are stylised profiles, did you even read the requirements for a picture to be used? You're expecting the modeller to make up a face from scratch that fits a crude profile, rather than use a picture that exactly fits what they need?
Again you seem to have this bizarre notion that artwork (which was what coins are also) is photo-realistic and accurate, completely ignoring the license artists take. Usually making their subjects look better than they do in the flesh. Never mind the considerations of mass production and likely the huge variety in appearance of what is ostensibly the same person from one coin to the next.
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