Antique Japanese Fused Yama Chawan 3 Bowls Kosei Sanage Tradition Heian Kamakura

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Size: Height: 8.5 cm / 3.3 in Diameter: 17.5 x 15.0 cm / 6.9 x 5.9 in Weight: 950 g / 2.09 lbs

This is a rare example of a fused Japanese yama chawan, consisting of three mountain tea bowls joined together during firing in a medieval kiln. It is thought to date from the late Heian to Kamakura period, approximately the 12th to 14th century.

Based on its form, clay, and firing character, the piece may be related to the Kosei kiln tradition in the Tokai region, and more broadly to the Sanage ceramic tradition, although an exact attribution cannot be confirmed. According to its history, it was reportedly unearthed many years ago near Hamamatsu by a local potter.

The clay is coarse and sandy, and the surface shows strong natural ash glaze effects with areas of vitrification. Blue-green to pale green glassy formations created during firing can be seen on the exterior, giving the piece a striking and highly organic appearance.

As an excavated medieval ceramic, it shows expected age-related wear including distortion, rough surfaces, kiln adhesion, glaze loss, and small chips. The fused condition is considered an original result of the firing process, not later repair. Please check the photos carefully for details.

Condition: As an unearthed medieval artifact, the piece shows heavy signs of age, including distortions, gritty surfaces, and minor losses consistent with its 800-year history. The "fused" state is a permanent firing characteristic. Please check the photos carefully for details.