i saw that wikipedia article as well, and yes, this is art - it had to be drawn/painted by hand out of the interpretation of the makers mind - model or no, the artist only conveys what they see within themselves .......or, is it advertising? since each of these images were placed over the different brothel rooms to show what services the woman inside offered?....is all art advertising? LOL, i kid i also saw in the same article (yes, i read it all the way through, sounded like the dissertation in my erotic art book) that the term pornography did not come into use until hundreds of years later.....therefore i might think that any nude or "sexual" art that was created before then could not be considered as pornography