Region: Tokoname, Japan (常滑市)
Kiln: Seizan Kiln (誠山窯)
Potter: SEIZAN (誠山), Kataoka Makoto (片岡 誠)
This large, unglazed rectangular bonsai pot by third-generation SEIZAN (誠山), Kataoka Makoto (片岡 誠), exemplifies the disciplined geometry and quiet authority for which the Seizan kiln is highly regarded. Formal yet restrained, the design reflects a mature Tokoname aesthetic rooted in balance, proportion, and enduring functionality, resonating strongly with the ideals of wabi-sabi (侘寂) and shibui (渋い).
The form is defined by a pronounced internal planting rim (内縁, nai-en) and subtly tapered walls that widen gently from the base toward the rim. Crisp, square-edged corners reinforce the pot’s architectural clarity. Just below the rim, a distinctive dual top band (二重上縁, niju joen) introduces two finely articulated parallel ridges, adding depth and refinement while preserving the overall restraint of the design.
This example is formed from a rich, chocolate-toned clay body, darker and deeper in character than the more commonly encountered Tokoname hues. Fired to a dense, durable finish, the surface presents a soft, even texture that enhances the visual weight of the form. With age and use, the clay has begun to develop a natural patina (風合い, fu-ai), contributing to a refined tsuchi-aji (土味), the subtle “flavour” of mature, well-fired clay valued by experienced collectors.
The foot construction (足作り, ashi-zukuri) is robust and precisely executed. The stepped corner feet (段付き足, dan-tsuki ashi) consist of two clearly defined horizontal layers, providing stability and visual structure. A continuous basal band encircles the lower body, creating the impression of a third tier. This compositional element subtly elongates the profile of the pot and establishes strong visual continuity between body and foot.
External dimensions: 55.7 × 47.6 × 9.30 cm
Internal dimensions: 50.5 × 32.3 × 6.80 cm
Condition: Excellent, with early surface patina developing naturally
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About the Potter – 誠山三代・片岡 誠 (Kataoka Makoto)
Born in 1927, Kataoka Makoto (片岡 誠) was the third-generation master of the Seizan Kiln (誠山窯) in Tokoname. Working under the name SEIZAN (誠山), he became widely respected for his unglazed bonsai containers, particularly those influenced by the kowatari (古渡) tradition derived from antique Chinese ceramics. His work is characterized by formal precision, quiet dignity, and surfaces that gain depth and character through time and use.
He was the father of Kataoka Katsushi (片岡 克司), known professionally as Reiho (玲峰), a prominent contemporary potter who continues the Seizan lineage today.
