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I was not able to find any references to any sterling (pure) silver items made by the Poole Silver Company. It appears that they only made silver-plated flatware (forks, knives, spoons, etc.) and holloware (bowls, goblets, teapots, etc.)
No. The US has never made a coin with pure silver. The closest to pure silver would be American silver Eagles. These coins are silver bullion coins. They are made of 99.93% silver and .07% copper.
99.9% of pure silver.
The silver value is about $6.00. NOTE: The US has never made a pure silver quarter, they are 90% silver & 10% copper.
No
No. No circulating coinage was ever PURE silver, but generally a blend of silver and copper. That said, coins of the Korean won are currently made of aluminum or a nickel/copper blend.
that it is made by 92.5% pure silver
In the U.S., "coin silver" is the term for the alloy of 90% silver and 10% copper that was used to mint dimes, quarters and halves up to 1964, and dollars up to 1935. Sometimes silverware makers would melt coins and use the metal to make utensils. It had a known cost, a known purity, and held up well.
99.9% pure silver is called sterling and pure silver
Silver plated? Not worth your time to extract. Plating puts such a small coating of silver on the object that the costs to extract it are more than any gains from the silver you are extracting.
US quarters (and dimes, half dollars and silver dollars) were never made of pure silver. Up till 1964, they were struck in an alloy of 90% silver and 10% copper.
The 1924 silver dollar is not pure silver. It is mixture of 90% pure silver and 10% copper.