How to clean up the harmful rust on ancient coins

1. First of all, to distinguish which copper coins are rusty, you really need to remove the iron core, because not all rust needs to be removed. For example, the introduction of Chongzhen is also possible. Unexplained indifference may lead to the "disfigurement" of money, so when choosing to clean up money, we must judge and choose calmly.

Then buy a bottle of coke in the supermarket. Any brand of coke will do.

3. Then find a useless container to hold coke and copper coins, and put coke and copper coins in the container.

4. Then prepare a brush. Cut off half the fur from an unused broken toothbrush. The remaining roots are hard and can be used to brush copper coins.

5, then let it stand overnight, pour it out the next day, brush it with a brush, it may be a little red, because carbonic acid reacts with some substances in the coin, but let it stand for a while.