From 1975

The green underglaze shield mark was used from 1975 to 1996. The A stands for Albrecht Duke of Bavaria.
The constant changes in the style/heraldry of the coat of arms are a reflection of the 260-year history of the manufactory. For connoisseurs, the signets offer clues to dating. As with precious Aubusson tapestries or papers with watermarks, Porzellan Manufaktur Nymphenburg's mark has the status of a seal of quality. It vouches for the highest manufacturing quality and is recognized worldwide as Nymphenburg's trademark.