Fine porcelain china cup or small vessel marked "Diane"

Ceramics

Common

Identified on September 19, 2026

Estimated Value

$10-$30

A small white porcelain piece with a glazed finish and a maker's mark on the underside reading "Fine Porcelain China Diane JAPAN" beneath a stylized monogram logo. The form appears to be a cup, small bowl, or possibly a demitasse-style vessel, though the full shape is not visible. The piece has a clean, simple design typical of mass-produced Japanese fine porcelain tableware or decorative giftware from the late 20th century.

Era

Late 20th century, likely 1970s-1990s

Origin

Japan

Material

Porcelain

Condition

Good overall condition with minor visible wear and a small stain/discoloration near the base; no obvious chips or cracks visible in the image

Share this identification:

Physical Details

Dimensions

Approximately 2.5-4 inches in diameter at the base; full height unknown

Weight

Light

Authentication

Authenticity Score

Medium - the mark appears consistent with Japanese porcelain export ware, but the full object is not visible and maker identification is incomplete

Provenance

Likely Japanese export porcelain, produced for retail or giftware markets rather than a high-end studio or antique porcelain line

Historical Significance

Represents postwar Japanese porcelain export production, which supplied large quantities of affordable fine china to international markets. While not historically rare, such pieces are useful examples of late 20th-century household porcelain branding and export manufacturing.

Learn more about this type of antique

This identification and value range are AI-generated research aids, not authentication, certification, or a formal appraisal. Learn about the limitations and when to consult a qualified professional appraiser.