This is an interesting item. This is a piece from the German adult-sized porcelain tea set that was produced from 1908-1932. Few of the items from this specific set were marked, so the lack of a mark shouldn't be any cause for alarm. It's unclear what the function of this lidded container was. I surmise it may have been a tea or coffee container. Although rare, because of the chips and its lack of a clear function, I value this item at $300. A recent comparable was the exquisite and perfect candle stick holder from this same set that brought $610. The buyer did get a good deal at the selling price of $178.50.
Mark B. Ledenbach's vintage Halloween collectibles blog.