This is a collectable Japanese Seto ware mountain tea bowl, excavated and repaired with a gold repair, an aesthetic kintsugi.
The Yamajawan or Yama-Chawan, which means translatet 'Mountain tea bowl', has an ore-like sparkle natural ash glaze. It is for sure a proto-pottery bowl with great reference value.
Seto ware is pottery with the oldest history in Japan. There is no older chawan in existence (Heian-Kamakura period, 12-13th century).
Since the products from the early Tokoname kilns in the Heian, Kamakura and Muromachi periods (794-1573) are mostly vases and jars, it was once thought that production of early Tokoname ware was limited only to these two shapes. However, Yama-Chawan (mountain tea bowl) were also fired and shards of the mountain tea bowl have been found at many kiln sites. The style of the mountain tea bowl is coarse in appearance and its trumpet mouth rim is not tapered but terminates in an abrupt 90deg. lip edge.
Besides this piece, large flat bowls, dishes, roof tiles for Buddhist temples, lipped bowls, cooking pots and other various utensils for daily use were produced and fired in anagama kilns (tunneled sloping Kilns) located along the ridge of hills running through the central Chita peninsula.
Size: Width 5.4'', Length 4.9'', Height 1.8''