It looks authentic to me. The hair loss is because the shields were essentially rawhide without the hair removed. The skin was scraped to remove flesh adn fat and stretched open fresh to dry, and that. I don't think they even salted the fresh skins back then, but I'm not sure. Hair loss is almost standard on such old shields and typically occurs where minute traces of fat remained on the skin. This allows microbial activity which results in hair loss.