You assume incorrectly. The only boards for which artwork is available have that artwork visible on the construction page, and that is for discontinued boards only.
Not all commercially produced boards are perfect. These days it is very rare for them to stuff up, but in my time I have seen horrors you would not believe!
Not all commercially produced boards are perfect. These days it is very rare for them to stuff up, but in my time I have seen horrors you would not believe!