In Minsk, a 1990s coin that underwent an incredible chemical reaction is being sold for $6000

The author of the advertisement claims that the coin could have been processed using a so-called magnetic "shrinker". An ordinary, already minted coin was placed in a small multi-turn coil - a solenoid. After that, a powerful battery of high-voltage capacitors was discharged into this coil for a very short time.

As a result, a current pulse of tens or even hundreds of thousands of amperes arose. The rapidly changing magnetic field of the coil caused a powerful eddy current in the coin. According to Lenz's law, its magnetic field opposed the field of the coil.

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Because of this, a very strong force, directed towards the center, arose along the entire outer circumference of the coin. The coin compressed simultaneously along its entire perimeter, not just from one side. The process itself in similar experimental setups can take only tens of microseconds.

That is why the coin retained an almost perfectly circular shape: the impact was symmetrical around its entire circumference.

At the same time, the coin became smaller in diameter and thicker. The metal practically does not disappear during such processing, so the mass remains almost the same. If the area of a circle decreases, the same volume of metal must move into thickness.

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In other words, the coin does not "dry out" at the atomic level, but is plastically reshaped: the diameter decreases, and the metal is squeezed up and down, increasing its thickness.

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According to the owner, the image on the coin also proportionally decreased. This means that it is not a new, smaller die for minting, but the original image that compressed along with the metal itself.

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A conventional household electromagnet, transformer, or constant magnetic field cannot create such an effect. This requires a special pulsed setup with a high-voltage capacitor bank and a powerful solenoid. During such experiments, the working coil itself can be destroyed due to enormous mechanical loads, so the equipment is placed in a strong protective chamber.

The author of the advertisement believes that what he has is a real Russian five-ruble coin from 1998, which was subjected to magnetic-pulse compression after minting. Moreover, this is not a manufacturing defect of the Russian Mint, but an experimentally modified numismatic item.

The declared mass of the coin is 6.51 grams. According to its owner, this corresponds well to the hypothesis of preserving the main amount of metal after compression.

Separately, the author of the advertisement draws attention to the radial lines that appeared on the surface of the coin. According to him, they are formed during the deformation process and are unique: even two identical coins, processed under identical conditions, will not have an exactly identical pattern of such lines.

Therefore, the seller calls the coin a real unique numismatic artifact, which is very difficult to find in regular sale, and emphasizes that such a coin can become the only similar specimen in a private collection. He is currently asking for 18,100 rubles for it, but is willing to discuss the price with truly serious and interested people.

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