Factory mark
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A factory mark is a marking affixed by manufacturers on their productions in order to authenticate them. Numerous factory marks are known throughout the ages, and are essential in determining the prov
20th-century Jingdezhen ware, with factory mark: 中国景德镇 ("China Jingdezhen") and MADE IN CHINA in English
Meissen porcelain factory marks.
Hallmark
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A hallmark is an official mark or series of marks struck on items made of metal, mostly to certify the content of noble metals—such as platinum, gold, silver and in some nations, palladium. In a more
Factory mark
…using "guild sign", "master sign", "quality mark", "sign", "mark", "signature". Modern researchers, when discussing historical marks, typically use "hallmark", and "trade mark" for guild marks, "monogram" for individual or company marks. The factory marks have been imitated "profusely through the ages" in…
A hallmark is punched into a section of a silver chain by a silversmith.
A set of hallmarks on an English silver spoon. From left to right, the maker's mark of George Unite, the date letter (1889), the Birmingham Assay Office mark, the lion passant and the monarch's head tax-mark
Hallmark for gold
The Polish hallmarks 1963–1986