research draft
寶成出品 · Evidence under review
The earlier workshop attribution and museum reference could not be substantiated from the cited library book. They have been withdrawn pending an identifiable object or a precise supporting passage. The characters below preserve the research question; they are not a verified historical impression.
Reading to investigate
寶成出品
Bǎochéng chūpǐn
Read the proposed wording in two parts, 寶成 and 出品. 出品 can credit the concern that issued a product. On a documented Yixing pot it follows 利永公司 on the base. That comparison explains the expression. The identity of 寶成 and the position of the proposed Chaozhou mark remain open.
Evidence under review
Bibliographic correction: the library copy is by Li Bingyan and Lin Nan, Jinan University Press, 2022. The former authors, publisher, year and claim of a complete reading were incorrect. Correcting this record does not verify every inherited claim citing it; those claims require passage-level review.