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  2. Coin cleaning - Wikipedia

    en.wikipedia.org/wiki/Coin_cleaning

    These coins are graded with a description which lowers the coin's value by 90%. [14] [16] Dipping: The coin is dipped into a dilute acid solution that removes the oxidation from the coin along with a small amount of metal. Overdipped coins result in loss of luster which lowers the coin's grade and appeal. [12] [9] Ivory soap and Water

  3. Toning (coin) - Wikipedia

    en.wikipedia.org/wiki/Toning_(coin)

    [1] [2] Coin toning can vary in aesthetics, and thus can alternately add or detract from a coin's value. [3] Coins with unusual toning colours or patterns tend to be valued by coin collectors. Toning is most common on silver coins, but can be found on coins minted from other metals and alloys, including gold, copper and cupronickel.

  4. Saddle Ridge Hoard - Wikipedia

    en.wikipedia.org/wiki/Saddle_Ridge_Hoard

    The face value of the coins totaled $27,980, but was assessed to be worth $10 million. The hoard contains $27,460 in twenty-dollar coins, $500 in ten-dollar coins, and $20 in five-dollar coins, all dating from 1847 to 1894. The collection is the largest known discovery of buried gold coins that has ever been recovered in the United States. [1]

  5. Don’t Spend These 8 Rare Coins — They Could Be ... - AOL

    www.aol.com/finance/8-rare-coins-not-spend...

    Just about all of the coins you will come across in your lifetime are worth what they say they are worth -- a half dollar is worth 50 cents, a quarter is worth 25 cents, and on down the line. In ...

  6. Gold coin - Wikipedia

    en.wikipedia.org/wiki/Gold_coin

    Gold coins for sale at the Dubai Gold Souk. A gold coin is a coin that is made mostly or entirely of gold.Most gold coins minted since 1800 are 90–92% gold (22‑karat), while most of today's gold bullion coins are pure gold, such as the Britannia, Canadian Maple Leaf, and American Buffalo.

  7. Why do we toss coins into fountains? - AOL

    www.aol.com/why-toss-coins-fountains-160126436.html

    Where the money goes. Some well-known fountains can collect thousands of dollars in coins each year. According to an NBC report from 2016, the Trevi Fountain accumulated about $1.5 million in ...

  8. When salt was gold: The evolution of two commodities

    www.aol.com/salt-gold-evolution-two-commodities...

    An ounce of salt could once be traded for an ounce of gold. Now, the idea is laughable, with the cost of gold reaching over $2,000 per ounce while 26 ounces of salt is valued at just $1.

  9. Canadian Gold Maple Leaf - Wikipedia

    en.wikipedia.org/wiki/Canadian_Gold_Maple_Leaf

    1 troy ounce coin; .99999 oz pure gold - experimental issue 2007 Two Hundred Dollar Coin Stanley Witten: 500 $1,899.95 test bullion coin, 1 troy ounce coin; .99999 oz pure gold, privy t/e - test coin, comes encapsulated and presented in a maroon flock-lined clamshell case, available to collectors who enter draw-to-buy 30,848 N/A