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hallmarking act of 1973 in a sentence

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  • Burton had the first piece of platinum to be hallmarked at the London Assay Office in 1973 when hallmarking for platinum was introduced under the Hallmarking Act of 1973 and platinum became a recognized metal under the Vienna Convention on the Control of the Fineness and the Hallmarking of Precious Metal Objects.
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How can I put and write and define hallmarking act of 1973 in a sentence and how is the word hallmarking act of 1973 used in a sentence and examples? hallmarking act of 1973造句, hallmarking act of 1973造句, 用hallmarking act of 1973造句, hallmarking act of 1973 meaning, definition, pronunciation, synonyms and example sentences are provided by ichacha.net.