Fake or original? Methods for determining the authenticity of coins
Coin (Latin moneta) is a money symbol made of metal or other material of a certain shape, weight and dignity. In addition to high-grade coins, there are also exchange, collection, commemorative and investment coins. Most often, coins are made of metal by coinage and are in the form of a regular circle.
The state of coins is an indicator reflecting, mainly, the presence and extent of wear (wear), as well as other damages and deficiencies in coins, used by experts in the field of numismatics for collectible and commercial purposes.
Determine whether an original or a fake is in front of you, it can be very difficult. Especially for someone who is not an expert in this matter is not. We suggest that you familiarize yourself with the most understandable ways to determine the authenticity of coins.
Importance of assessing the state of coins
Attentive numismatist collectors and professional dealers in the coin market attach considerable importance to the state or degree of coin safety. The state of the coin is the most important criterion determining its collectible value. Collectible or numismatic value of a coin is the difference between its nominal value (or the price of a coin metal) and the amount that collectors are willing to pay for this coin.
Evaluation of the state of the coin has the main purpose of determining its numismatic (or collection) price. In view of the fact that most of the old coins in the process of their long circulation significantly deteriorated, coins in a high degree of safety remained much less than a very loose coin. That is why coins in good condition sometimes have a very high collection value in comparison with the same, but poorly preserved specimens. In today's numismatic market, a very small difference in the state of some coins can sometimes mean a multiple difference in their price.
The market of collection coins is constantly changing, and with it the scientific and commercial standards and representations concerning the definition of the safety of coins are gradually changing. Over the years, the state of coins is increasingly affecting their collectible price, and at the same time the assessment of the state of coins is gradually becoming more detailed and accurate.
Catalog way. Sometimes, to determine the original coin, it is enough to make a comparison with the example from the directory. Often, counterfeiters create coins specifically for non-experts, so their efforts to achieve identity are not enough.
Weight and diameter of a coin
Weight and diameter of a coin. Always check the mass of the coin, which is indicated in the directory. This procedure should be done with a diameter. The conclusion suggests itself, if the data does not match.
Checks check. All copies of old coins today are produced by casting. But before that, only coinage was used for this. Coins of different ways of making are quite easy to distinguish.
Separation. It is almost impossible to create such an effect. The detachment appears over time due to the internal corrosion of the ligature impurities.
Stamp shine. The areas of the depressions in the inscriptions on old coins often retain an initial luster. For example, the coin field inside the letter O. Stamp shine is preserved, even in the case of short-term use of coins.
Using a microscope
Use of a microscope. 400-800 fold increase will help to disassemble a special kind of corrosion, which is inherent only in ancient coins.
Comparison with a genuine coin
Comparison with the original coin. The best way is to compare with the present instance. Comparison of the relief and the field will help to establish that the coins were minted with a single stamp.
Spectral analysis. It gives an opportunity to determine the sample and the composition of the ligature. If the analyzes of the two coins are similar, then we can assume that they were minted at the same time.
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