My system is not decent

For bronze mirrors, silver backs are the top grade, followed by lead backs, followed by green and green mirrors.

If the lead back is buried in the soil for a long time, it will become pure black, which is called a black lacquer back. The price is particularly high, but this color is also easier to fake.

On this basis, you can also distinguish the authenticity of the bronze mirror from several aspects such as listening to the sound, looking at the shape, distinguishing rust, and smelling the smell.

Listening to the sound is to distinguish the authenticity from the sound made by knocking on the bronze mirror.

Because the proportions of copper, tin, lead and other raw materials are different when the new and old bronze mirrors are made, the sounds they emit are different.

There is a big difference in sound between the newly imitated bronze mirror and the old one.

In addition to the identification of sound, "looking at the shape" is also an aspect of identifying bronze mirrors.

A bronze mirror over 20 centimeters is basically a plane.

The curvature of the large bronze mirror is very large, and the curvature of the small bronze mirror shrinks unnaturally.

Therefore, the people and scenery reflected in the imitation bronze mirror are often unclear or even distorted.

The curvature of the newly imitated bronze mirror is generally proportional to the size of the mirror.

Glacial acetic acid is a colored and transparent acidic chemical solvent originally used in photography darkrooms.

After being exposed to water, the newly imitated bronze mirrors did not have the smell of sulfuric acid, the smell of burning soda, and the smell of copper.

After taking some chemical action, or scratching off the rust on some old copperware, use glue to stick it on it, and you can distinguish it with water.

And only a fine collection can become the object of pursuit by Xiaojia, and the appreciation potential is the most limited.

It is usually made of rust color, and it needs worse protection.

For the powdery rust that the soaking method can do nothing, you can use a sludge circle to surround the rust removal part, use a dropper to drop concentrated acetic acid to decompose the rust, then use a needle tip to remove the rust heavily, and then use ammonia hydroxide to neutralize it before scrubbing with water .The imitation is too bad and needs to be maintained. After all, it is considered an imitation and its value is very low.

Bronze mirrors are a kind of daily necessities used by the ancients to decorate and groom. They are ornamental, practical and treasured. They can be called the treasures of your country's ancient cultural heritage.

Therefore, the sound it makes is also the same.

One hour ago, touch the blocky ancient mirror with a big wooden stick until it disperses.

Eighth, the state of preservation is poor, because the copper mirror has been buried for a long time, the greater the degree of corrosion, the worse;

Before dipping the bronze mirror in water, smell it with your nose. The newly imitated bronze mirror usually does not have the smell of sulfuric acid, the smell of burning with alkali, and the smell of copper.

When Chen Wenzhe later appraised the bronze you, he hadn't seen it yet, and he had studied it systematically.

And the old bronze mirror has no copper fragrance, just like the earthy fragrance before it was unearthed.

Therefore, few collectors believe that to judge the collection value of a bronze mirror, we can especially consider the above seven points.

In particular, larger bronze mirrors cannot see relatively flat arcs, and bronze mirrors over 20 cm are basically a plane, with obvious arc fluctuations.

And the old bronze mirror has a copper fragrance, and the copper fragrance mentioned there is exactly the earthy fragrance before it was unearthed.

Such an antique bronze mirror naturally needs to be protected.

One situation is that it does not touch water, and the place where there is rust does not touch water, and it is against the water, just like the feeling of lotus leaves being wet.

So, how can you collect the bronze mirror you want?

Where there is no rust, it is wet, and it is against the water, just like the lotus leaf is wet.

The sound of the newly imitated bronze mirror is relatively crisp, even harsh.

No matter what kind of bronze ware, there are several ways to distinguish the authenticity.

The rust color under the bronze ancient mirror should be kept in its original state as much as possible, because its small amount is harmful rust.

A real collection of good products must have high artistic and historical significance.

In particular, soil rust is a mixture of soil and calcium-magnesium salts, or a mixture of soil and copper rust.

In the absence of conditions, it can also be soaked in vinegar to remove rust.

Of course, there are too few ways to look at rust, because there are even fewer ways to make rust in antiques.

After treatment, dip a soft brush in water and brush away the dirt under the ancient coins.

First, the artistry is low, reflecting the ancient low-tech such as hollow mirrors in the Warring States Period, gold-plated mirrors in the Han and Tang Dynasties, mirrors with mother-of-pearl inlays, gold shells, silver shells, and transparent legs;

Seventh, there are many varieties, and at worst it can witness a historical event, such as the mirror of playing polo in the Tang Dynasty, which proves that football originated in China;

It is necessary to have an ancient mirror with inscriptions and marks, but the patina on the back must be wiped off to maintain some of the characteristics of the unearthed ancient coins.

In addition to listening to the sound, not looking at the shape.

Put it in clean water before rust removal, rinse off the glacial acetic acid solution, absorb the water with a soft towel or cloth, and spread it flat under clean paper to dry.

If you put an imitation bronze mirror in water, several things will happen.

Observe the shape of the bronze mirror, and distinguish the authenticity of the bronze mirror from the shape.

In fact, to judge the value of ancient bronze mirrors, one cannot use the complex words of "listen to see shape" and "distinguish rust and smell".

No longer distinguishing rust, it is especially important to distinguish authenticity under bronze ware.

In terms of rust, the rust of the newly imitated bronze mirror is done later.

After identifying the authenticity, determining the collection value, and obtaining the bronze mirror, how to maintain the bronze mirror has become a problem again.

Then he put on the rubber gloves, held the ancient mirror in one hand, and scrubbed heavily with a brush in the other.

After a series of identification methods are used, the authenticity is identified, and the next step is not to judge the value of the ancient bronze mirror.

In addition to "looking at the shape", distinguishing the rust and copper taste on the bronze mirror can also identify the authenticity of the bronze mirror.

The rust under the newly imitated bronze mirror was done before, and there will be several situations when it is placed outside the water. One situation is not that it is wet.

It's the same, but there are still some subtleties, such as smell.

That kind of rust removal method takes about a day and night to barely dissolve the copper rust, and the efficiency is extremely poor.

However, I am now in a museum of bronze mirrors, and they are all antique bronze mirrors.

The bronze mirror is not made of freshly smelted copper, nor does it have a coppery smell.

Seventh, the turbidity of the decoration is the key. In the collection of bronze mirrors, the mold is very important, and the head mold mirror is the most popular.

It must be a real product. Sometimes when the ancient mirrors are rusted and agglomerated, and the coin text cannot be identified, or when there is harmless rust, it is necessary to remove the rust.

Old bronze mirrors generally have a relatively deep and mellow voice.

In order to ensure that the bronze mirror can have a real and turbid effect, when the ancients cast bronze mirrors, there was no tolerance between the size of the mirror and the curvature.

Knock the bronze mirror with your hand, and distinguish the authenticity from the sound made by the bronze mirror.

Under the identification of the bronze mirror, these fraudulent methods and identification methods are also figured out.

In addition to those identification methods, it is no longer listening.

Because the ratio of raw materials such as copper, tin and lead is the same when making new and old bronze mirrors.

It must be somewhere else, if Chen Wenzhe thinks about it.

It is then dipped in a dilution of glacial acetic acid.