1800s tea server

I have researched this from time to time but can only find out about hall,elton before they sold out. this has the marking of pre 1865. It has a stamp of .888 on the bottom of the kettle. I have never seen anything close to it. It has some amazing art designs on it. I dont want to sell it, My father had it apprailed in the mid 80s but couldnt remember what it was worth. He thinks he remembers like 1700.00 but he also had some other things apraised at the same time. It has a serving cup and a porcelian lining inside of what im calling the tea/coffee pot. It is a beautiful center peice and i just want to know if its worth sending it out to be restored or not. thanks you

Fair