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  2. Counterfeit banknote detection pen - Wikipedia

    en.wikipedia.org/wiki/Counterfeit_banknote...

    A counterfeit banknote detection pen, used to detect fake banknotes. A counterfeit banknote detection pen is a pen used to apply an iodine-based ink to banknotes in an attempt to determine their authenticity. The ink reacts with starch in wood-based paper to create a black or blue mark but the paper in a real bill contains no starch, so the pen ...

  3. Currency detector - Wikipedia

    en.wikipedia.org/wiki/Currency_detector

    A currency detector or currency validator is a device that determines whether notes or coins are genuine or counterfeit.These devices are used in a wide range of automated machines, such as retail kiosks, supermarket self checkout machines, arcade gaming machines, payphones, launderette washing machines, car park ticket machines, automatic fare collection machines, public transport ticket ...

  4. Counterfeit money - Wikipedia

    en.wikipedia.org/wiki/Counterfeit_money

    Anti-counterfeit money sign and examples of counterfeit notes received by a noodle shop in Kunming, Yunnan, China. Some of the ill-effects that counterfeit money has on society include: [3] [4] Companies are not being reimbursed for counterfeits. This has led to companies losing buying power. [30] As such, there is a reduction in the value of ...

  5. 4 Decades of Valuable Coins: See Which Are Worth the Most ...

    www.aol.com/finance/4-decades-valuable-coins-see...

    For example, in 2021, a 1933 Gold Double Eagle coin sold at auction for over $18 million. It fetched such a high price because of its extreme scarcity, as it is one of only 13 surviving coins from ...

  6. 9 Rare American Coins That Are Worth a Lot of Money - AOL

    www.aol.com/finance/9-rare-american-coins-worth...

    The Standing Liberty quarter remains “among the most collectible old coins ever made” by the U.S. Mint, according to Gainesville Coins. The coin’s design made its debut in 1916 but was ...

  7. Counterfeit United States currency - Wikipedia

    en.wikipedia.org/wiki/Counterfeit_United_States...

    "To Counterfeit is Death" - counterfeit warning printed on the reverse of a 4 shilling Colonial currency in 1776 from Delaware Colony American 18th–19th century iron counterfeit coin mold for making fake Spanish milled dollars and U.S. half dollars Anti-counterfeiting features on a series 1993 U.S. $20 bill The security strip of a U.S. $20 bill glows under black light as a safeguard against ...

  8. US Presidential Dollar Coins Worth the Most Money — You Could ...

    www.aol.com/us-presidential-dollar-coins-worth...

    10 Genius Things Warren Buffett Says To Do With Your Money. This article originally appeared on GOBankingRates.com: US Presidential Dollar Coins Worth the Most Money — You Could Score up to $141,000

  9. Coin counterfeiting - Wikipedia

    en.wikipedia.org/wiki/Coin_counterfeiting

    A real British pound coin, of the old type, on top of a fake.This coin was often counterfeited. Defective milling and letters on a counterfeit coin (top) For modern coins in general circulation, the most common method of protection from forgeries is the use of bi-metallic coins made of two metals of different color, which are difficult to counterfeit at low cost.

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