Stately Hand Thrown Pottery Stemware Goblet Chalice

This is a very well done hand thrown pottery goblet or chalice. It is very tall for a piece of stemware of this type and quite difficult to make. Only a master potter could do one of these this well. It is signed by the potter and dated 1975. I can't make out the signature enough to say what it is. It is 7.25 inches tall and 3 and 3/8 inches across the rim. It is in very good condition, no cracks and chips.