Antique Tokoname Tsubo Jar Muromachi Momoyama Ubakuchi Kiln Mark Wabi Sabi Japan

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■ Description A. Introduction Step back into the era of the Samurai with this excavated masterpiece from the Six Ancient Kilns of Japan. This is a Tokoname-yaki small jar (Ko-tsubo), dating from the late Muromachi to Momoyama period (16th century). It features a rare and highly prized mouth shape known as "Ubakuchi," embodying the quiet strength of the Wabi-sabi aesthetic.

B. Features & Cultural Context

• The "Ubakuchi" Shape: You asked about the specific shape where the rim curves inward. In Japanese antique terminology, this is called "Ubakuchi" (姥口), literally meaning "Old Woman's Mouth" (referencing a toothless, inward-curving mouth). Far from being derogatory, this is a revered term in the Tea Ceremony, symbolizing humility and the containment of spiritual energy.

• Era: Late Muromachi to Momoyama Period (approx. 1500s–1600s). The clay texture and the specific high-fired reduction confirm its medieval origins.

• Kiln Mark (Kama-jirushi): A distinct kiln mark (symbol resembling a checkmark with a circle) is incised on the shoulder. This was used by potters in the communal kilns of Tokoname to identify their wares 500 years ago.

• Patina: The surface displays the rugged, unglazed texture of iron-rich clay, with natural ash glaze ("Shizen-yu") effects creating a reddish-brown landscape.

C. Usage & Decor Ideas

• Chabana Vase: The Ubakuchi shape is exceptionally functional for flower arranging; the inward curve supports flower stems naturally, making it perfect for a single wild flower in a tea room.

• Wabi-sabi Display: A powerful object for meditation or display in a minimalist interior.

D. Size & Weight

• Height: 15.5 cm / 6.10 in

• Width (Diameter): 18.0 cm / 7.09 in

• Weight: 1,900 g / 4.19 lbs

E. Condition Condition: Antique / Excavated This item is approximately 500 years old.

• Rim: The rim is rough, which is typical for Ubakuchi items and excavated wares. It is difficult to distinguish between original kiln flaws and age-related wear, but the condition is considered good for the era.

• Body: There are natural firing imperfections, stones in the clay (ishi-haze), and surface erosion consistent with centuries of burial or use.

• Stability: No fatal cracks that would compromise its display value.

F. Conclusion This Tokoname jar is a textbook example of medieval Japanese pottery. The "Ubakuchi" mouth and the clear kiln mark make it a significant study piece for collectors. It captures the raw, unpretentious beauty that defined the Momoyama tea aesthetic.