Medieval Ceramic Chalice Game Of Thrones or Celtic Style Coffee Or Beer Hot Cold

This is an an interesting ceramic work of handmade art. It is signed with an illegible signature on the bottom. It is approximately 12oz capacity and fully glazed for drinking quality food grade. I purchased it many years ago from a ceramic artist at an arts and crafts festival for a pretty penny more than my bidding price here. I never actually used it, but kept it encased in a glass bookcase with books of antiquity relevant to the period of this cup or medieval chalice that is made with similar markings to Celtic design of the ages. It is a unique piece. Please view condition photos. Thanks