This is a vintage Japanese Tsukubai which is place in Japanese gardens and tea gardens for centuries.
It is dated early Showa (1920's-1940's).
Granite stone water basins ( chozubachi ) originated in ancient shrines and temples for worshipers to wash their hands and mouth as a symbol of purification. It is shaped in Kiku,chrysanthemum shape. It is perfect for your garden.
15 1/2"Diameter x 8"H