The pen is genuine. The inscription 18 kt is found only on older nibs; newer nibs bear the marking Au 750 or Au 585, which is why this marking indicates the age and not the authenticity. The additional inscription Pix under the clip or on the cap has been applied more frequently in recent years, because Pix is in many countries protectable as a brand, while Meisterstück cannot be protected everywhere. The combination of the named features is thus a normal characteristic of current production.