How do you clean the dirt off a copper coin without damaging it?

You can choose to use some milder detergent, adjust it with a certain proportion of water, then soak it for a period of time, and then gently wipe it with a softer item such as a cotton cloth or sponge, so that the gentle way will not damage the copper coin.

A mild detergent can choose household alkaline dish soap, or you can also add a little white vinegar for a better cleaning effect.

Be careful not to use simple and crude physical methods, such as carving with a knife and grinding with sandpaper, which will leave marks on the copper coin. <>

I think it is more important to store it than to clean it, it is best to put it in a dry and clean place, and if you want to avoid rust, you can also put some quicklime, activated carbon and other desiccants around that can absorb moisture, and then store it properly.

At the same time, I think that sometimes some rust is not too useful to clean up, as if it will damage its historical value, after all, many of the antiquities are now identified through the traces of time left on its body, if the cleaning is spotless, it will make it depreciate, so I think it is okay to try to preserve it well, and there is no need to pursue too clean.

I've seen an antique dealer who used a soft-bristled toothbrush dipped in toothpaste to clean the copper coin in his hand.

As he spoke, he brushed the coin with his toothbrush a little harder, and white foam gathered on it. I don't think the toothpaste has perlite, otherwise it might damage the copper coin.

He cleaned up patiently, and a copper coin had to be taken care of for a long time.

It is said that there are now those who sell special copper coin cleaners, so it is worry-free.

Another way is to buy a bottle of Coca-Cola and soak copper coins in it.

Because Coca-Cola is a carbonated drink, it will act on a part of the patina.

Don't soak it for too long, half an hour is almost done.

Because if there is too much patina in the copper coin, you can't clean it off for as long as you soak it.

If you soak it in carbonic acid for a long time, it will corrode the copper coin.

Once soaked, take it out and gently brush off the stains with a toothbrush.

After the patina is basically cleaned up, you can play with it by hand, and after a long time, you can also remove some of the rust spots, and the copper coin becomes shiny.

Soak it in MSG water overnight, and the next day there will be no dirt left!

Rust is slowly cleaned with a carving knife Thin rust can be soaked in monosodium glutamate water and then brushed with a brush There are money laundering water sold on the Internet That effect is also very good.

<> whoever sees if this is real or fake, it's worth a few bucks!

With concentrated sulfuric acid! The effect is just now!

I also have an Emperor Song Tongbao, which is worth 1o yuan.

If there is a lot of green mucus on the copper coin, then the collector can rinse it with anhydrous alcohol, and if there is dirt and fingerprints on the copper coin, it can also be cleaned in this way, especially the new fingerprint and new dirt, the removal effect is particularly good. Of course, be careful not to get it back on, otherwise repeated cleaning will also damage the coin. For traces of time, use a high-grade eraser that does not contain sand to gently wipe them, and pay attention to the lighter force.

If it is a large amount of dirt or special dirt, such a copper coin handling should be skillful. If possible, it is recommended to clean it with an ultrasonic cleaner, followed by anhydrous alcohol. When cleaning, the copper coin should be hung in the cleaning solution, so it is best to hang it with a net bag, so as to avoid the collision between the copper coin and the inner wall of the cleaning machine, resulting in new traces.

In addition, when cleaning the surface of copper coins, dirt and residues, it is necessary to observe the coins, pay attention to the problems to stop in time, and take effective remedial measures.

What you need to prepare: a small bowl, an appropriate amount of vinegar, and paper towels.

1. First of all, take out the bronze coin and prepare it for use, as shown in the figure below.

Dear, hello, the specific cleaning method is as follows. 1.Add a pinch of salt to a small container (1 gram is enough).

2.Add some acetic acid (white vinegar is recommended) and salt and stir. 3.

Then put the copper coin in a mixture of salt and vinegar and soak it for a few seconds to see the effect. 4.If vinegar is not available, it is okay to use tomato sauce instead, because the ingredients of tomato sauce also contain vinegar.