How to save coins

Don't touch the front and back of coins directly with your hands; Pack the coins with special coin clips and paper money protective film, and put them into the coin collection book. You can't soak the coins in alcohol. If the coins are stained, you can soak them in vinegar and rinse them with water. How to preserve the previous coins

Is it possible to have one cent in 81 years and two cents in 8 years among coins in circulation? That's a joke.

Hello, landlord. The coins in circulation from 196 to 1989 basically cost a few dollars. Buy a whole set of coins in circulation from 1955 to 1992, except for the five kings, and 1 minute and 2 minutes in 1992. The seven didn't flow through at all, and it was only 8 or 9 yuan, that's all.

if you don't count one point in 55 and 57 years, it will be cheaper. How to keep coins?

In China, coin collection has a long history. Since the reform and opening up, the mass collection of world coins is in the ascendant, and its status as the main collection has been recognized by more and more collectors. Due to the lack of knowledge introduction, communication and media publicity, some collectors are at a loss about the preservation of coins. It is often seen that many refined coins (Proof) were originally packaged in airtight plastic packages and shiny as mirrors, but what can be seen in the market is that they have been sealed, and the mirror of the coin has disappeared, but there are many fingerprints or scratches. Some coins are scarred and unrecognizable after a period of exchange in the market. Although coins are made of metal materials and have a certain hardness, it seems that they are not easy to be damaged. In fact, it is not easy to keep coins. The appearance of coins is divided into 7 grades according to American standards. The correct preservation method should slow down or stop the corrosion process of coins to avoid serious injuries and try to maintain the original appearance grade.

improper storage, often only adding a scratch that can be seen with a magnifying glass or a black spot the size of a needle eye will cause coins to drop by more than one grade, while a coin with a grade difference of hundreds or even thousands of dollars in the Klaus standard coin catalogue is by no means unique. Keeping coins correctly not only protects your collection, but also protects your assets. On the other hand, it is also to preserve the historical heritage for the next generation of society.

in order to preserve coins, let's start with the deterioration of appearance. The corrosion process of coins depends on the following factors: chemical stability (composition) of coin materials, materials in contact with coins for packaging, atmospheric conditions for storing coins and contact observation of coins. Generally speaking, gold is more resistant to corrosion than silver; Silver is more resistant to corrosion than copper; Metals such as zinc, aluminum and iron are easily corroded. For alloys, sometimes it depends on metals with more active chemical properties, such as pure gold, which has better stability. When copper is added to gold to form alloys, coins are prone to black spots. But brass (copper-zinc alloy) is more corrosion-resistant than pure copper in the atmosphere. PVC in packaging materials is harmful to coins. At room temperature, PVC will gradually separate out plasticizers to corrode coins, which can cause irreparable losses. We should pay enough attention to this point, especially for copper and copper alloy coins. In foreign countries, the harm of using PVC has been widely recognized in the early 198 s, and this material has been eliminated in the packaging of coins and replaced with polyethylene. Substances such as water vapor, sulfide and carbon dioxide in the air are also very harmful to coins. For example, sulfur reacts with silver to form silver sulfide, which turns the surface of silver coins gray and black. Moisture in the air also accelerates the oxidation process of coins. In the process of appreciation, touch bare coins with your hands, so that sweat marks leave fingerprints on coins; Saliva and dust in the air fall on coins, and these attachments will accelerate the corrosion process of coins.

in order to keep coins well, we should first choose a good packaging method, which is not only convenient for viewing, but also conducive to protecting coins, depending on personal conditions. Optional packaging includes plastic boxes other than PVC, paper clips with polyester film round holes, polyester film bags, paper bags, etc. Optional materials are polyethylene, polypropylene and polyester film. In order to facilitate appreciation, it can also be put into the coin collection book on the basis of transparent packaging. The key point is that you can't choose materials containing PVC to package and store coins, and its harm can never be underestimated. In order to isolate the air, there are generally two methods: airtight and vacuum packaging. Airtightness means isolating the air, but not pumping out the air in the package. Vacuum packaging will bring the packaging material into close contact with the coin surface, which may also damage the coin. Packaging adopts thermoplastic compression or ultrasonic fusion, which has not been popularized, and is generally only used in packaging new coins in mint and graded coins in rating agencies. The simplest way to isolate the air is to soak coins in anhydrous alcohol. This method has the disadvantage that it is not easy to watch, but the effect is good. Coins should be stored in a ventilated and clean and dry place.

generally speaking, you should not play with bare coins directly, especially you should not touch refined coins, UNC or high-grade coins. The place where the hand touches the coin must be the first place to corrode and turn black. If you really want to take and put coins, use clean soft paper or cloth to separate the edges of holding coins.

coins generally don't need to be cleaned, especially they can't be wiped with ordinary rubber or glass fiber wiping rods sold in the market, which will scratch the surface of coins. If there is green mucus on the surface of the coin after packaging with harmful materials, it can be cleaned with anhydrous alcohol. For stains and fingerprints on coins, alcohol can also be used to clean them, which is effective for new traces and can prevent further erosion of coins by stains and fingerprints. For the old traces, if necessary, you can use a sand-free advanced drawing rubber to wipe them properly. For coins with large pieces of dirt and especially dirty, ultrasonic cleaning machine can be used when conditions permit, and alcohol should be used as cleaning liquid at this time. Coins should be suspended in the cleaning solution with mesh bags to prevent coins from directly contacting the inner wall of the cleaning machine and causing damage, because the mechanical vibration of the inner wall and the collision of coins will damage coins. In this way, dirt can be removed without scratching coins. It should be noted that cleaning can not improve the grade of coins, but is only beneficial to viewing (removing excess substances attached to coins). The grade of a coin depends only on the degree of wear and tear of the coin itself. Save the coins!

to maintain the appearance of coins, the correct preservation method must be used. Although vacuum packaging can isolate the air, it may damage the coin by bringing the packaging material into close contact with the surface of the coin. The simplest way to isolate the air is to soak coins in anhydrous alcohol, which has a good preservation effect, but it is not convenient to watch.

The correct preservation method must be used to maintain the appearance of coins. Although vacuum packaging can isolate the air, it may damage the coin by bringing the packaging material into close contact with the surface of the coin. The simplest way to isolate the air is to soak coins in anhydrous alcohol, which has a good preservation effect, but it is not convenient to watch.

in addition, collectors should not play with bare coins directly, especially should not touch refined coins, uncirculated coins or high-grade coins. Where the coin is touched by hand, it may corrode and turn black. If you really want to take and put coins, use clean soft paper or cloth to separate the edges of holding coins. Coins generally don't need to be cleaned, especially they can't be wiped with ordinary rubber or glass fiber wiping rods sold in the market.

coins generally don't need to be cleaned, especially they can't be wiped with ordinary rubber or glass fiber wiping rods sold in the market, which will scratch the surface of coins. If there is green mucus on the surface of the coin after packaging with harmful materials, it can be cleaned with anhydrous alcohol. For stains and fingerprints on coins, alcohol can also be used to clean them, which is effective for new traces and can prevent further erosion of coins by stains and fingerprints. For the old traces, if necessary, you can use a sand-free advanced drawing rubber to wipe them properly. For coins with large pieces of dirt and especially dirty, ultrasonic cleaning machine can be used when conditions permit, and alcohol should be used as cleaning liquid at this time. Coins should be suspended in the cleaning solution with mesh bags to prevent coins from directly contacting the inner wall of the cleaning machine and causing damage, because the mechanical vibration of the inner wall and the collision of coins will damage coins. In this way, dirt can be removed without scratching coins. It should be noted that cleaning can not improve the grade of coins, but is only beneficial to viewing (removing excess substances attached to coins). The grade of a coin depends only on the degree of wear and tear of the coin itself. Coin storage

There is a box for putting coins. Generally, a box can hold 1 coins. It has a spring inside.

Or you can take a bag and put it in it.

And you can study how many coins you use every day, and put the extra coins in a piggy bank or a bottle every day. How can you store a large number of coins if you only take enough for one day when you go out?

Ordinary varieties go to the coin market to buy inserts and pack them, while high-end products buy special boxes for coins. Isolated from air and moisture, direct contact with hands is strictly prohibited. How to store a quincunx coin

This kind of coin is the most difficult to store. It is recommended to store it in a dry, moisture-proof, vacuum, airtight and sun-proof environment. . . . . . . . The surface is easy to oxidize. Don't open the original package ... How to keep the old coins?

There are professional collection books and coin plastic boxes. How to preserve the 5-cent coin after rust removal with vinegar

1. Coin bag storage: make a small bag of standard size (5 mm *5 mm) with paper and plastic film. It can be divided into single bag, double bag and multiple bags. Money bags are cheap to store. Paper bags are easy to write instructions and can be made by themselves, but they are opaque and inconvenient to watch. Plastic bags are transparent and intuitive, but if the material is polyvinyl chloride (PVC), long-term storage will easily cause corrosion or damage to coin metal. There are various materials that do not contain PVC, but they are brittle. The coin bag is suitable for short-term storage and transportation of circulating coins and general collection coins. The easiest way is to use a transparent film pouch as the primary protection for coins.

2. Paper clip storage: Its manufacturing method is to punch out coin holes with different diameters on the cardboard, line them with transparent film, and then nail them with a stapler or stick them with adhesive, with uniform size of (5mm * 5mm). Using paper clips for storage is of moderate price, which is convenient for writing and viewing. This method is suitable for all kinds of coins. If the lining transparent film is made of polyvinyl chloride (PVC), long-term storage will easily cause corrosion or damage to coin metal. But now there are high-grade paper clips, and the transparent film used is made of high-grade materials without polyvinyl chloride (NO-PVC, PVC-FREE), which has a good long-term protection effect on coins.

3. Coin box storage: Coin boxes are made of transparent hard plastic, square or round in shape, lined with cushions, and can have various sizes. The price of this kind of coin box is slightly higher. Its characteristics are transparent and intuitive, and it is not easy to damage the currency, but it is not convenient to write instructions. Can be used for collecting coins, especially refined coins and gold and silver coins. Sealed coin box, completely airtight, can be labeled with signs and bar codes. The price of the packaged coin box is high, which can be used for high-grade coins, especially those with grade identification.

4. Currency book storage: Currency book generally consists of a cover and an inner page, and the inner page is loose-leaf with different specifications and sizes. The currency book is cheap, convenient for storing multiple coins and purchasing transactions, transparent and intuitive. However, if loose-leaf materials contain high polyvinyl chloride (PVC), it is not easy to store coins for a long time. In addition, there is a loose-leaf manual for special wallet (see Figure 2 below), which is slightly higher in price. Coins are not in direct contact with loose leaves in the wallet, which can prevent corrosion and be uniform. The combination of wallet and loose leaf is an ideal storage method for general coins, which is widely used.