how can you tell if coins are counterfeit ?

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how can you tell if coins are counterfeit ?

Here are some links that might be useful to you:

https://www.ngccoin.com/resources/counterfeit-detection

https://www.ngccoin.com/resources/counterfeit-detection
NGC Counterfeit Detection | Identify Counterfeit Coins | NGC
16 avr. 2024A genuine coin is used to create a die that is an exact mirror image of the coin. This includes any and all marks, scratches or other issues on the surface of the genuine coin. As a result, every fake struck from these counterfeit dies will have the same depressions (marks are called depressions on ).
Top 50 Counterfeit Us Coins
Counterfeit Detection. To help collectors and dealers identify counterfeit coins, NGC has prepared lists of the most commonly counterfeited US, Chinese and world coins with diagnostic information and images from NGC’s extensive database, as well as commentary from the NGC coin grading team. The top 50 most commonly counterfeited U.S. coins …
Top 25 Counterfeit World Coins
The 1887 Great Britain 5 Sovereign is a one-year type coin with a mintage of a mere 54,000 pieces. This low mintage, along with the natural attrition of such an old gold coin, has made any example quite valuable. This has opened the door to counterfeiters looking to take advantage of collectors in search of an example for their collection. Read more >
Top 25 Counterfeit Chinese Coins
Struck at the newly formed Nanking Mint, these coins are often called Kiangnan Cyclical Date Dollars. Two characters at 3:00 and 9:00 indicate the date in the 60-year Chinese Calendar. This coin from 1898 (or year Earth and Dog in the cycle) is the first year of issue of the type. Many varieties exist. Read more >
Counterfeit Detection: 2023 Silver Eagle
Counterfeit 2023 Silver Eagle. Click images to enlarge. First, weigh your coin. In this case, the coin in question weighs 31.54 grams, about 1.4% higher than the expected 31.103 grams. That’s not enough to condemn it as a fake, but it should raise an eyebrow, given that they are struck in .999 silver. Speaking of silver, a metallurgical …

https://www.silvercoins.com/fake-silver-coins-14-ways-to-spot-counterfeits

https://www.silvercoins.com/fake-silver-coins-14-ways-to-spot-counterfeits
Fake Silver Coins: 14 Ways to Spot Counterfeits
3. The Ice Test. Cheap and easy to do, getting some ice from the freezer is a simple way to test both silver coins and bars for authenticity. All you need to do is place the ice on the silver and watch. The ice should begin to melt immediately, this is because silver is the best conductor of heat for all the metals.

https://libertycoinandcurrency.com / blog / five-ways-to-spot-a-fake-coin

https://libertycoinandcurrency.com / blog / five-ways-to-spot-a-fake-coin
FIVE WAYS TO SPOT A FAKE COIN – Liberty Coin & Currency
Typically they are too high or much too low. A prospective buyer can test the authenticity of a coin by stacking it up with coins from the same series. If the stack topples over, you have a reason to become more cautious with the transaction. Magnets are not attracted to elements such as gold and silver.

https://hobbylark.com/collecting/Ways-to-Detect-Counterfeit-Coins

https://hobbylark.com/collecting/Ways-to-Detect-Counterfeit-Coins
How to Detect Counterfeit Coins – HobbyLark
A Ring Test is a simple test that can be performed to determine if a coin is silver. The potential counterfeit coin is balanced on the tip of a finger then struck lightly with a known silver coin on the edge. If the coin is silver it will ring for several seconds with a sweet, high-pitched sound.

https://www.thesprucecrafts.com/how-to-detect-counterfeit-coins-4163525

https://www.thesprucecrafts.com/how-to-detect-counterfeit-coins-4163525
How to Detect Counterfeit Coins – The Spruce Crafts
Use a high precision caliper to measure the diameter and thickness of the coin. Use a scale that is accurate to within 0.01 grams to measure the weight of the coin. Compare your results to that of the genuine coin. If they are significantly off, you may have a counterfeit coin.

https://www.pcgs.com/News/The-Fundamentals-Of-Counterfeit-Detection–Part-1

https://www.pcgs.com/News/The-Fundamentals-Of-Counterfeit-Detection–Part-1
The Fundamentals Of Counterfeit Detection – Part 1 – PCGS
The transfer method is most commonly used to counterfeit gold coins. A few silver counterfeits also have been made this way, as have some fake copper coins. Interestingly, while entire date sets of counterfeit Indian Head quarter eagles, half eagles, and eagles have been seen, relatively few pre-1840 gold exist.

https://www.ngccoin.com/news/article/5045/counterfeit-coins

https://www.ngccoin.com/news/article/5045/counterfeit-coins
Counterfeit Detection: The Top 10 Most Common Counterfeit US Coins – NGC
Not surprisingly, some coins are counterfeited more often than others. This list reveals the top 10 most counterfeited US coins according to submissions received by NGC. #10 – 1925-D Quarter Eagle. Indian Head Quarter and Half Eagles were faked in substantial numbers decades ago and many of these forgeries continue to appear in the marketplace.

https://www.ic3.gov/Media/Y2021/PSA210909

https://www.ic3.gov/Media/Y2021/PSA210909
The FBI Warns the Public of Counterfeit Coin Scams
The FBI and the Department of Treasury are warning the public that counterfeit coins are being sold on various online auction, social media and retail websites, targeting investors and collectors. There are three types of counterfeit coins: transactional coins (quarters, dimes, etc.), numismatics (high value collectables), and bullion (precious …

https://blog.providentmetals.com/fake-coins-how-to-tell-a-counterfeit-from-an-original.htm

https://blog.providentmetals.com/fake-coins-how-to-tell-a-counterfeit-from-an-original.htm
Fake Coins: How to Tell a Counterfeit from an Original
One of the simplest and cheapest ways to make a counterfeit coin, cast fake coins are made by pouring a liquid metal mixture into a casted mold of an authentic coin. This is one of the more preferred methods of making counterfeit coins because of the ease it offers to producers, wherein the authentic be readily used to create the exact …

https://www.wikihow.com/Detect-Counterfeit-Trade-Dollars

https://www.wikihow.com/Detect-Counterfeit-Trade-Dollars
11 Ways to Detect Counterfeit Trade Dollars – wikiHow
26 nov. 2023If the magnet sticks, the coin is a counterfeit. This is a simple test that will tell you right away if a Trade Dollar is real or not. The Trade Dollar is a silver coin, and silver coins are not magnetic, so it definitely shouldn’t stick to a magnet. Some coins will stick to magnets, but not silver Trade Dollars. 2.
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