AI Appraisal Estimate

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Submitted photo · June 26, 2026

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AI appraisal

AI analysis & estimate

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Everything below is generated by AI for informational purposes only. AI can make mistakes — the AI may misidentify items or misattribute them (artist, maker, brand, designer, origin, era). This is not an official valuation and should not be used for insurance, sale, tax, estate, legal, or lending purposes — or any decision requiring a certified appraisal. It is not an authoritative claim about any person, brand, or rights holder — do not share or rely on it as a factual statement about a third party. Always consult qualified professionals before making financial decisions.

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AI Identification

·Not independently authenticated·Verify before acting

Japanese Ceramic Backstamp (Made in Japan Circle Mark)

Vintage Japanese Ceramics

AI Estimated Value

·Not an official valuation·Verify before acting

$45.00 - $85.00

As of June 26, 2026

AI Item Analysis

·AI can make mistakes·Verify before acting
This image captures the base of a ceramic object featuring a circular blue backstamp. The mark consists of a double-line ring enclosing the text 'MADE IN JAPAN' arranged in a circular configuration. The ceramic material itself is a fine-grained, cream-colored porcelain or high-quality earthenware with a smooth, glazed finish. The blue pigment used for the stamp appears to be a cobalt-based ink, typical of underglaze printing techniques. The lettering is slightly irregular, suggesting a hand-applied stamp rather than a modern digital print. Based on the specific layout and phrasing of the 'MADE IN JAPAN' mark, this piece is likely an export item dating from the pre-World War II era (circa 1921–1941) or the immediate post-war recovery period, though it lacks the 'Occupied Japan' designation required between 1945 and 1952. The glaze shows subtle variations in opacity and some light surface wear, consistent with a vintage item. There are no immediate signs of significant crazing or structural chips visible in this tight frame, though the soft focus suggests a utilitarian or decorative household object such as a plate, figurine, or tea vessel. The craftsmanship represents standard commercial export quality from the early to mid-20th century.

AI Appraisal Report

·AI can make mistakes·Verify before acting
I have virtually examined the ceramic base featuring the circular 'MADE IN JAPAN' backstamp. Based on the cobalt underglaze and circular typography, this mark is consistent with Japanese export porcelain produced between 1921 and 1941, following the McKinley Tariff Act requirements but preceding the 'Occupied Japan' era. The cream-colored body and smooth glaze suggest a mid-range commercial production quality, typical of regional kilns in Seto or Nagoya. The condition appears stable with minor shelf wear and no evidence of significant crazing or restoration. In the current market, collector interest for standard pre-war export ware is moderate. While these items are charming and historically significant, they were mass-produced for the Western market; consequently, rarity is low unless the piece is part of a complete set or features a specific sought-after pattern like Moriage or Dragonware. Value is primarily driven by the utility and aesthetic of the unseen obverse. Limitations: This evaluation is based on visual evidence of the backstamp alone. A definitive valuation and authentication would require a physical inspection to check for 'ring' resonance (indicating structural integrity), a full view of the hand-painted decoration to assess artistry, and magnification to confirm the absence of modern transfer-print dot patterns. Provenance documentation or original box sets would further refine this estimate.

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