This is a teacup from MANN FILTER, a company that primarily manufactures tuning parts for foreign cars. They are a German manufacturer of automotive filters. This item is a promotional item and is not usually available for sale, making it a rare item. The diameter of the mouth is 63mm, and the height is approximately 95mm (103mm including the foot). The thickness of the mouth is about 3mm. It is not from any famous pottery. It originally came in a plain box, so I will ship it in that box as shown in the photos. Would this be of interest to someone who likes cars? Thank you.