Preliminary identification
Photo reference
5 uploaded photos
Overview
An authentic Japanese porcelain hexagonal jar (rokukaku-tsubo) featuring underglaze cobalt blue (sometsuke) stylized floral and rockwork motifs on each faceted panel, accompanied by an antique fitted wooden storage box (tomobako/jidai-bako). The slightly uneven milky-white glaze, distinct foot ring characteristics, and bold brushwork reflect the early-to-mid Ko-Imari / Ai-Kutani style traditions of Hizen ware.
Story
Fired in the hillside kilns of Arita around 350 years ago, hexagonal jars like this were among Japan's most prized early porcelain treasures. Each faceted panel was individually hand-painted with cobalt blue before entering a high-heat wood-fired kiln.
Maker / Origin
Produced by master potters within the historic Arita ceramic tradition of Hizen Province, controlled under the Nabeshima clan. These artisans perfected high-temperature porcelain firing techniques originally introduced by Korean potters in the early 17th century, creating the legendary Imari and Kakiemon styles that enchanted collectors across Japan and royal European courts.
Condition & Value
Fair-to-good antique condition. Shows typical kiln grit, small glaze pinholes, edge wear along the unglazed lip/foot, and a visible hairline fracture traversing the base.
Full Research
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Comparable demand stays strongest where maker, originality, and venue confidence line up. Broader examples still trade, but the range tightens quickly when provenance, condition, or selling lane fit is missing.
Best Venue
Specialty auction or a focused dealer with buyers already in this lane.
Signed example with light edge wear and original frame.
Comparable format with stronger provenance and cleaner surface.
Smaller related piece with visible craquelure and trimmed margins.
Period match with softer condition and weaker subject matter.
Close market lane comp with similar material and presentation.