Why are Ming dynasty reign marks not always reliable for dating Chinese lacquerware?

Ming dynasty reign marks are not always reliable for dating Chinese lacquerware for several key reasons:

• Imitations: It is often difficult to distinguish genuine Ming lacquer from high-quality imitations produced in Japan and other regions, which may carry false marks.1
• Spurious Production: During the 16th century, specific factories—such as those in Dali, Yunnan—were known to produce spurious imitations of earlier works.2
• Inconsistent Application: Reign marks, such as those from the Yongle period, were sometimes applied by scratching them onto the surface with a sharp point, making them inherently unreliable as a definitive guide to dating.1
• General Practice: In the broader context of Chinese decorative arts, reign marks were frequently used inconsequentially. Unless a piece can be dated with reasonable certainty through other stylistic or physical evidence, these labels are often considered insufficient for accurate chronological placement.3

While some pieces bearing carved and gold-inlaid marks from the Xuande emperor may be authentic to that period, collectors and scholars generally caution against relying on reign marks alone to determine the age of a piece.1