This is an AMAZING handmade redware Pythagoras cup from Greece.  The cup was bought there in 2017 during a holiday and has sat in a china cabinet ever since then.  The cup is glazed with a BEAUTIFUL blue drip glaze.  A Pythagoras cup does not allow the drinker to drink the liquid, and keeps recycling it through the mechanism.  It's quite a feat, and they're been made in Europe (especially Greece) for hundreds of years.  This one was handmade, and was bought in Greece in late 2017.  It is 4 inches tall and 4 inches in diameter.  It is in essentially NEW CONDITION!  It has never been removed form the china cabinet since it was brought back from Greece.