Stunning.  Simple.  Special.  But doesn't need to be polished.  In the world of Kiddush cups, this one is a rare find.  We love it.

The cup has a unique curved bottom that reduces the friction between glass and plate dramatically, allowing the glass to spin freely on the plate.

The text on the glass is mirror-etched into its curved bottom; it is legible when it is reflected on the shiny surface of the stainless steel saucer on which it rests. 

In the collection of The Israel Museum, Jerusalem, Israel