My system is not decent

These Chu gold coins found in Huizhou generally have two shapes, one is a square or rectangular gold plate, and the other is an oblate gold cake, and the former is more common.

The process of making this kind of gold coin is to first stamp the clay model with a stamp with characters, and then cast it into shape.

This kind of gold coin is not discovered once or twice, which is amazing.

After a little inspection, Chen Wenzhe discovered that the criminals had spotted him at least three times.

In other words, they harvested at least three times.

The first time was in 1974, in Fugou Gucheng Village, Nanhe Province, unearthed 392 gold coins with a total weight of 8183 grams, which were later bought by them with some treasures and cash for Xiali.

In 1979, in Huayuan Village, Shou County, Hui Province, a full plate of Yuan Jin 5187 and a small piece, weighing 25 grams, were unearthed, and they also exchanged them for their hands.

In 1971, a piece of Ying Yuan, weighing 17 grams, was also unearthed in Yingcheng, Jiangling, Hubei. This was found by themselves.

The gold content of these Chu gold coins varies, generally between 94-98%, and a small amount is only about 85%.

Of course, since gold coins are specially stored, it is naturally impossible to only search for ancient Chu gold coins.

Even this time, Chen Wenzhe found many modern gold coins, and there were also many foreign gold coins.

"Is this coin laundering? If the money from reselling cultural relics is directly exchanged abroad for gold coins, and then imported into the country, not only will the country not crack down on it, but will it encourage it?"

Seeing those hidden gold coins, Chen Wenzhe almost admired those tomb robbers.

It can be said that they are deliberate in dealing with stolen goods.

Of course, this must be for some big tomb robbers, especially for some large professional gangs.

Those little tomb thieves, if they got something, they would just sell it and spend a lot of money, and they couldn't save much.

Now, through direct and indirect relationships, Chen Wenzhe has seen most of the large-scale tomb robbery and stolen goods networks in China over a long period of time, so the harvest is too great.

Not thinking about these things, Chen Wenzhe concentrated on looking at those gold coins.

Gold coins made of gold have circulation and investment value, also known as investment gold coins.

For example, the Ugly Country Eagle Gold Coin, the Canadian Maple Leaf Gold Coin, and the Australian Fortune Gold Coin are common in China.

In addition, there are commemorative gold coins, which are also a type of gold coins.

It is usually a commemorative gold coin printed and issued for a specific purpose or an event.

There are quite a few gold coins traded the most in the gold market, such as South African Krugerrands, British Great Britain Gold and Silver Coins, Canadian Maple Leaf Gold Coins, Ugly Eagle Gold Coins, and Mexican Gold Peso.

my country's panda gold coins are also more popular in the world.

It turns out that Chen Wenzhe really didn't pay much attention to these gold coins. Of course, he knew that there were these gold coins, but he didn't think about collecting them.

However, now that he has an opportunity, and it is an opportunity to collect it without spending money, he will naturally not let it go.

"It's still the most powerful Ugly Country, and they actually have the most gold coins."

There are also many types of gold coins in Ugly Country, mainly double eagle coins with the head of the Statue of Liberty on the back of the coins.

The fineness is 90%, and the coin weighs 33.436 grams.

The reason why so many gold coins are collected is naturally not without reason.

The main reason is that Ugly Country's gold coin auctions are very active. Collecting this kind of gold coin is naturally easier to circulate.

In 1979, the Ugly Country Gold Coin once set the highest auction price for a gold coin. A gold coin minted in 1787 was worth $72.5.

Then there is the Mexican gold peso, which began with the currency reform in 1905.

The early gold peso was cast in 1905-1931, and the later gold peso was cast in 1943 and 1953.

Since the government often mints new coins from old ones, it is difficult to determine the true age of a coin.

The gold coin has a diameter of 37 mm, a fineness of 99.9%, and a coin weight of 41.66 grams.

The coin has an eagle on the face and a Grey grid victory symbol on the reverse.

Only the third one can be photographed in the British round. The royal gold coins issued by their country were issued earlier. In 1817, King George III had gold coins issued.

From 1937 to 1957, no gold coins were minted and issued. Before that, a total of 11 types of gold coins were minted and issued, most of which were marked by each king.

After 1957, a total of 12 types of pure gold coins were recast, with gold coins with the face of the Queen's head.

Then there is the Krugerrand in South Africa, which has a century-old casting history.

The fineness is 22K or 91.62%, the coin weighs 1.09 ounces, and contains 1 ounce of gold.

The gold coin was first issued in 1867 in limited numbers.

Exports began in 1870, and the face of the coin has the face of former South African President Krugerrand.

In addition to these relatively large quantities, there are also some lesser quantities, such as the maple and gold leaves of Canada.

The gold coin was minted in 1979, with a face value of $50, and there were about 1 million coins at that time.

The fineness is 99.9%, the diameter is 3 cm, and the thickness is 2.8 mm.

Maple Leaf logo on face and Queen Elizabeth's face on reverse.

There are at least two types, one is the Austrian Kroner gold coin, which weighs 33.87 grams, has a diameter of 37 mm, and a fineness of 98.02%, which is also very popular internationally;

The other is the Colombian 5-peso gold coin, which has the heads of Simon and Borevar and the portraits of gold workers.

The 5 peso gold coin weighs 7.98 grams and has a fineness of 91.67%. It also enjoys a reputation in the international gold coin collection circle.

Chen Wenzhe looked back at foreign gold coins of various ages.

He really didn't know if the group of tomb robbers knew about foreign gold coins.

Collecting gold coins is not just about collecting limited edition gold coins of the same era.

It is more of a collection, an official circulation gold coin once issued by the ancients.

Collectors often attach great importance to those gold coins with historical significance.

Because such gold coins are very worthwhile for archaeologists.

Every country has a lot of collection markets for ancient gold coins, and collectors also need to pay attention to fake and shoddy gold coins.

Maintenance of gold coins The order of oxidation resistance of refined coins is gold, nickel, silver, brass, and copper.

Nickel is more resistant to oxidation than silver, and copper is the easiest to oxidize.

Platinum, palladium, and aluminum-magnesium alloys do not need to be sorted because they are not the mainstream of refined coins.

Gold in nature does not react chemically with oxygen in the air or other gases.

Because the purity of gold coins is not too pure, it contains a small amount of silver and other metal components.

Therefore, there are often traces of oxides on the surface of gold coins.

It is mainly sulfur in the air, which combines with silver in gold coins to form trace sulfides.

Metal oxidation is related to the material and has a lot to do with storage.

For example, gold ornaments from 1000 years ago, some are golden and some are dirty.

Therefore, it is meaningful to discuss the way of coin binding and storage.

As long as the precious metal coins are in good condition, oxidation should not affect their value too much.

Therefore, the oxidation of refined coins is not terrible, because the collection value of refined coins is not only beautiful.