Can ancient coins be cleaned, and what is the best way to clean ancient coins

At present, the pickling and grinding methods that are rumored on the Internet are serious damage to the coin base plate and pulp, and it is firmly opposed by experienced spring friends! Why can't ancient coins be cleaned with acid (including vinegar, oxalic acid, toilet cleaner, etc.)? First of all, the acid not only erodes the toning and the baseplate, but the bronze coin washes the toning and thus loses its value.

Some people say that acid can wash brass coins, but this is a big mistake. Brass coins made of copper-zinc alloy will dissolve first when exposed to zinc acid, and the base plate will show a purplish red color of copper. Due to the combined action of acidic and humic acid in the rain, it will also lead to the dissolution of copper and zinc in shallow pits, making the bottom plate red.

Moreover, it will rust back after pickling, and it is difficult to regenerate slurry. The reason why the grinding method (including toothpaste brush, polishing, sandpaper, etc.) is not advisable is that it destroys the pulp, and the second is that it soaks the bottom plate and the original natural luster, so that the coin is as bright as new, and it has no characteristics and value of ancient coins, just like handicrafts. Why can't silver dollars be cleaned with acidic rust removal water?

The main reason is that acid will cause damage to the surface of the coin, making the original light become thief, scattered, shiny, and excessively white, and at the same time lead to the passivation of the black rust on the surface, that is, the acid will make the surface of the black rust form a harder oxide layer, which can no longer be washed off.

So how can you not hurt the coin and change the color of the baseplate, but also retain the pulp and quaint feel of the copper coin, and remove the obscuration of rust and dirt, and increase the value of the coin? There is a non-acidic coin rust removal water that has been recognized by many old collectors and is worth a try. It is recommended to use this non-acidic rust removal water, which can retain the simple state of the coin to the greatest extent, retain the pulp of ancient coins and copper dollars, and do not harm the bottom plate and luster of silver dollars.

Share this experience and method, so that everyone can avoid detours and protect our beloved ancient coins from being destroyed by barbaric means.

Yes, use a soft toothbrush with toothpaste!

What is the best way to clean ancient coins, the cleaning of ancient coins has a methodical and exquisite, and only by cleaning ancient coins in the right way can we ensure the integrity of ancient coins. The following article details what is the best way to clean ancient coins, and I hope it will be helpful for women who want to know what is the best way to clean ancient coins.

Vinegar bubble method

Wash the ancient coins, put them in a small butterfly, pour a little vinegar until they are submerged, take them out after 24 hours, brush them with a small brush to remove the rust, and then wash the vinegar with clean water, wipe them dry in the shade, which is a relatively simple and commonly used method, which can deal with all kinds of floating rust, but the effect is often not ideal, and many ancient coins will appear yellow after vinegar, which affects the appearance.

Salt immersion method

Add a pinch of table salt to a small container (1 gram is enough).

Add some acetic acid (white vinegar is recommended) and stir with salt.

Then dip the copper coin in the mixture and watch it lighten! Results in seconds.

If vinegar is not available, it can also be replaced with ketchup, which also contains the necessary acid. Copper pans can also be cleaned up this way!

Dry brushing

When the patina or rust is relatively shallow, you should try to avoid using chemical means such as vinegar bubbles, and you can use the dry brush method to clear the money lines.

The specific method is to choose a large oil paintbrush, and cut the brown hair on the tip of the pen to only a centimeter from the root, (be sure to make the root uniform) can be used. First put the ancient money to be brushed on the glass plate, fixed, if uneven, you can pad some cloth below, hold the root of the oil brush and brush evenly, pay attention to the force, otherwise the effect is not good, and wait for the floating rust to be brushed, and then clean it with water.

Boiling water immersion method

Sometimes ancient money will be covered with a layer of floating soil, but it can not be washed away, in fact, this so-called floating soil is actually a kind of rust. For this rust, we can first put the ancient coin in a bowl and pour boiling water at a temperature of 80-90 degrees into the bowl until the coin body is submerged. After 5 minutes, take out the money, brush the money and the body with a small brush, and dry it.

In the case of serious rust of ancient money, can also heat the water to boiling to make the rust fall off, through practice has proved that this method is very effective for removing rust, and has the great advantage of not damaging the pulp. If the lead to ancient coins is blurred or rusted into lumps, it can also be separated in this way.

1. Heating

Ancient coins can be heated and cleaned, first put purified water into the prepared empty can of Coke, then put the ancient coins inside, heat the can of Coke with an alcohol lamp, remove it after 8 10 minutes, and wait until the temperature is lower and then wash it with a wool brush.

2. Vinegar

Ancient coins can be cleaned with vinegar, first washed with water, then soaked in vinegar for 24 hours, then taken out, cleaned with water, and then dried with a towel and dried.

3. Brushing

Ancient coins can be directly brushed clean, fixed on a relatively strong plate, and then use a brush to brush the surface of the ancient coins to clean the dirt, after brushing, the ancient coins can be dried with a towel.

Ancient coins can be heated and cleaned by putting purified water in a cola jar, then putting ancient coins in and heating them with an alcohol lamp. After 8 minutes, remove the can of Coke, cool and scrub clean. It can also be cleaned with vinegar, soak the washed ancient coins in vinegar for 24 hours, then wash them with water, then dry them with a towel and let them dry.

1. Heating ancient coins can be heated and cleaned, first put pure water into the prepared empty can of Coke, then put the ancient coins inside, heat the can of Kelu Jianle with an alcohol lamp, remove it after 8 10 minutes, and wait until the temperature is reduced and then rotten and clean with a wool brush.

2. Vinegar ancient coins can be cleaned with vinegar, first wash the ancient coins with water, then soak them in vinegar for 24 hours, then take out the ancient coins, clean them with water, and then wipe them with a towel and dry them.

3. Brush the ancient coins can be directly brushed clean, fix the ancient coins on a relatively strong plate, and then use a brush to scrub the dirt on the surface of the ancient coins, and after brushing clean, the ancient coins can be dried with a towel.