"These three are good." Fang Qi took out three pieces, all of which were the best of the fifty treasures in China, the Heavenly Treasure, the Holy Song Treasure, and the Great Shu Treasure. The other Huaxia Fifty Treasures Copper Coin were all eliminated, and then he took out a few fake things at a glance, the old professor nodded suddenly, Fang Qi could exclude these, indicating that Fang Qi had a certain skill in ancient coins.

"This one, this one." Fang Qi looked at the copper coins on it, and each one of them was picked up and carefully identified.

"This guy can't really be an expert, it's no wonder he has to take classes." Looking at Fang Qi's careful selection above, while the old professor on the side was smiling, it was obvious that Fang Qi was not randomly selected, it was genuine.

"That's not necessarily, maybe they have already colluded, you can also give the old professor a sum of money and let him cooperate with you in this play, and then you don't have to go to class, and you have a full score in the exam." A boy looked at Fang Qi with jealousy in his eyes.

Maybe the old professor smiled when he watched him check the error. Haven't you heard that Professor Qi and the old professor have met face-to-face, it must be a human relationship, and now this society does not rely on academic qualifications, but on relationships. "There are few people who think about Fang Qi, everyone is jealous, even the squad leader is no exception.

"Hehehe, it's good, it's good, it's all out. Fang Qi has done a good job, you have to study hard. Fang Qi has another teacher, I can only mention a little bit, classmates, this is a genuine bronze coin, there are at most a few hundred pieces of it, and these three, each of which is no less than 100,000, belongs to the fifty treasures of China, Fang Qi actually picked them all out, this skill is not low. ”

Hearing the old professor's words, everyone was shocked, one hundred thousand, three is three hundred thousand, and they couldn't help but look at the copper coins on it. Is it made of gold?

"The price of ancient coins in the market is now reaching new highs, especially four years ago, a Song Dynasty Nine Stacks of Seals that were only 80,000 in 91 years, which is the only one left in the world, was copied at a sky-high price of 9 million. Even the treasures in the fifty treasures of China do not have such a price. Of course, the Emperor Song Nine Stacked Seal is just a one-of-a-kind copper coin. Like Wang Mang's Jin Kui Zhiwan, Daqi Tongbao is actually no worse than him, and even slightly better.

Although there was a suspicion of speculation at that time, there is no doubt that these really top copper coins are in the copper coin market where fakes are rampant, and the price of a treasure will be higher and higher. ”

Fang Qi knew that what the old professor said was not wrong at all, once these bronze coins entered the hands of real collectors, unless he was a hundred years old, it would be difficult for them to appear on the market again. And if it is passed on, it will be passed on from generation to generation.

These copper coins are already in extreme shortage in the market, and when the time comes, there will be more and more people collecting them, and it may really reach a sky-high price.

"Professor, I want to ask, I know all the knowledge in books, can I not go to class?" Looking at the man standing up, the old professor couldn't help but shake his head. Road:

"Of course not, after you graduate. I don't know what you do, but I have to be accountable to you. Now if any of you think that you can become a teacher, I will give you a chance, these are three ancient coins, you help me separate him from the real and the fake, and you can also become a teacher. "Look at the three copper coins. A lot of people can't help but want to try it.

Soon the first student who came up came to the front of the copper coin, looked at the three copper coins on it, and couldn't help but show a trace of embarrassment. The copper coins on it are all rusty, and it is difficult to distinguish between real and fake. The most ruthless heart, all classified as genuine or imitation.

More than a dozen came up one after another, because every time the old professor put it in again, he was taking out three of them again, and he didn't even have a chance to cheat. Many people directly define copper coins that look a little new as imitations.

"Hehehe, congratulations." Hearing the old professor's words, everyone couldn't help but be overjoyed, thinking that they had been right, but the next words made them fall to the bottom.

"The dozen or so students who came up didn't know how to identify at all, do you think this is new or imitation, old is real? In this case, I can say, I will give you 100,000 yuan to the market, and it would be nice if you could bring me 100,000 yuan of copper coins. Hearing the old professor's words, everyone couldn't help but blush.

"Classmate Fang Qi, you tell them about these appraisal knowledge, and let them know that these are not embroideries that I did acting with you," Hearing the old professor's words, the faces of the people below were even hotter.

"Good professor, but professor, can I borrow your copper coins and use it?" Hearing Fang Qi's words, the old professor nodded.

Then Fang Qi removed the three Huaxia Fifty Treasures, and put all the other copper coins directly in a transparent plastic bag, mixing them together. With that done, Fang Qi strolled down. For every two copper coins on the two tables, Fang Qi took out two directly from them without the slightest hesitation.

"Yes, one is true, one is false." At this time, a voice sounded, and everyone couldn't help but look out the door, only to see an old man in his fifties standing at the door, holding a copper coin from a student close to the classroom door, with a hint of appreciation on his face.

"Secretary Li." The financial secretary of the school, who is in charge of the financial power of the school, usually takes two classes, but most of the time is patrolling, which is equivalent to the existence of an overseer.

"Hehehe, Professor Long, you go on, good student, this coin is clearly distinguished, there is a real one on each table, and one is fake, and the foundation is not shallow." Hearing Secretary Li's words, everyone couldn't help but be surprised. Looking at the coins in his hand, he just thought it was just two random coins, but he didn't expect it to be one true and one false, thinking of his recklessness just now, everyone couldn't help but look at each other strangely.

You must know that the copper coins in Fang Qi's hands are a hodgepodge now, Fang Qi can tell the difference so clearly, this skill is indeed not comparable to them.

"Well, now the copper coins in everyone's hands are one real and one fake, many people can't see it, that's because you have not received professional training, compared with real copper coins and fake copper coins, you can actually distinguish seven aspects. But some require professional knowledge, and you don't have that foundation yet, so let's start with three simple ones.

The first is to distinguish rust, and the coins we see now are nothing more than two kinds: one is an excavated product, and the other is an heirloom. The excavated items have been buried underground for many years, and their surfaces are covered in patina. Due to oxidation, the heirloom has a layer of slurry on the surface, which is black or dark copper.

The rust on the surface of the unearthed coin is deeply stained into the coin, and because its molecular structure is stable and compact, the real rust is not easy to wipe off. On the other hand, the counterfeit rust color is on the surface of the coin, called "floating rust" or "powdery rust", which is relatively frivolous and easy to fall off.

Of course, this method is not realistic now, so we can use the needle method to press the steel needle vertically on the patina on the surface of the copper coin, and then quickly release it to see if the steel needle can stand up. The one that stands up is false, because the old patina is hard and immovable

Second, many numismatists and collectors like to use the method of listening to sound to identify ancient coins. Due to the texture of ancient coins, the older they are, the more serious the oxidation is, and the more hoarse their sound is when thrown on the concrete floor. In the pre-Qin period, the knives, cloth, and coins were basically mute. The coins after the Ming Dynasty are relatively recent and have not been deeply oxidized, and the sound is crisp and loud.

Thirdly, counterfeit coins are mostly decorated with chemicals, which tend to emit an unpleasant, pungent chemical odor, while genuine coins do not have this strange smell. ”

Hearing Fang Qi's words, everyone was shocked, except for the old professor and the secretary who was listening next to him, everyone looked at Fang Qi differently for a while. Using these methods to identify, several students were soon able to identify the copper coins in their hands.

"Of course, these can't distinguish all the copper coins, you must know the Tao of the Dao, and those who imitate the Tao also know the Dao. When I was traveling in Myanmar this summer, I came across a rare copper coin, and the above methods could not identify the authenticity of this copper coin at all.

They use genuine copper coins as grinding tools, and then use bronze coins or bronze mirrors to repeat them, such copper coins are enough to confuse the real with the fake, of course, if you are a veteran, you can also distinguish it. But if it's buried in the ground for two or three years, it's really hard to discern, and there was such a case a few years ago. At that time, several top experts were eye-catching, which shows that human creativity is endless.

Here's a copper coin forged by the recasting method, and you can pass on this to see, this kind of copper coin is very easy to appear in the market, and most of them are imitations of those rare varieties of coins. ”

"There are few fifty treasures in China, such as Jin Kui Zhiwan and Daqi Tongbao, there are only two or three pieces, all in the hands of famous collectors, you can imagine how many of these are distributed in the hands of millions of collectors across the country. Therefore, everyone must be careful when collecting precious varieties of copper coins, because in the market, one out of a hundred may not be real.

Especially those truly rare and unique items, far from being price-determined. I have seen a gold Kui Zhiwan, in the hands of Lin Dong of Shanghai International Bank. At that time, Lin Dong refused to exchange a Yongzheng blue and white flower worth 20 million for other people's gold Kui Zhiwan, and finally used a Qianlong enamel color snuff bottle to meet his preference, so as to exchange for that treasure Jin Kui Zhiwan. ”

"Papapa" Fang Qi finished speaking, and immediately the whole classroom burst into applause, even the two professors were no exception, Fang Qi's class was not bad compared to them, especially the serious energy, they also understood that the basic knowledge here was useless to Fang Qi. (To be continued......)