Japanese Narumi Porcelain Item Backstamp

This image shows the base or backstamp of a porcelain item, manufactured by the renowned Japanese brand Narumi. The surface is finished in a high-gloss black glaze that exhibits significant signs of age and use, including widespread surface scratching, swirl marks, and mineral spotting or 'water spots.' The manufacturer's marks are applied in a contrasting silver or light gray tone. The markings include the Narumi script logo inside a circular emblem, the words 'PORCELAIN' and 'MADE IN JAPAN' in a block serif font, and what appears to be a stylized signature or collection name at the bottom, possibly 'Milton K. Nishi.' The craftsmanship typically associated with Narumi from the mid-20th century (c. 1950s-1970s) suggests a high-quality bone china or fine porcelain body beneath the glaze. The wear pattern indicates it may be a frequently used tabletop item such as a plate, bowl, or tray. There are no visible cracks or chips in this view, though the glaze integrity has been compromised by micro-abrasions over time, dulling the original mirror-like finish.

Based on my visual examination of the Narumi backstamp, I have assessed this piece as a genuine mid-century (circa 1960s) porcelain item, likely from a line associated with designer Milton K. Nishi. The backstamp features the authentic Narumi circular emblem and serif typography consistent with Japanese exports of that era. The 'Made in Japan' mark combined with the specific script suggests a mid-tier luxury market placement for its time. Regarding condition, the high-gloss black glaze shows significant 'utensil marks,' micro-abrasions, and mineral hazing. This level of surface wear is typical for vintage Narumi but does detract from the 'near-mint' status collectors seek, capping its market value. While Nishi designs are collectible for their period-matching aesthetics, they are not exceptionally rare. Market comparables for single plates or small trays in this condition generally fall in the double-digit range. Factors impacting value include the loss of the original mirror finish and the specific decorative pattern on the reverse (unseen). Limitations: This appraisal is based solely on a two-dimensional photograph. I cannot perform a 'ping test' to check for internal hairline fractures nor examine the piece under UV light to detect professional restoration. Full authentication would require physical inspection to verify the tactile quality of the bone china and verify provenance through original purchase records or catalog matching.