Ref.: Sotheby's, Amsterdam, Dec. 4 and 5, 2006, The Frits Philips collection, lot 71, for a similar example. (sold EUR 4.200) (link available on our website)? This ewer has a hole on the bottom, through which it is to be filled. Once turned back up, the internal structure allows the entered liquid to remain inside the vessel to be poured properly from the spout.