This tsuba is a depiction of the sky filled with clouds. At the upper left, the moon appears with the depiction of a rabbit pounding rice for sweet rice cakes. This is the figure that the Japanese see in the moon. This tradition may have developed in part because the word for rice cake (“mochi”) can also mean “full moon."  Nakamura Chikayori (Artist).  mid-late 19th century (Edo-Meiji)., Japan.  The WaltersArt Museum