How to save commemorative coins

Commemorative coins are stored as follows:

1. Try not to touch the surface directly with your hands, because sweat stains on your hands will pollute the surface of gold and silver coins. It is best to seal gold and silver coins with sealed plastic, which is more convenient to watch and can also prevent dust in the air from polluting the surface of gold and silver coins. Try not to collide, because it is easy to leave traces when colliding with each other.

2. If the gold and silver coins are dirty, put them in warm soapy water for slight cleaning, then rinse them with clear water, gently dry them with a soft cloth, and finally put them in a dry and ventilated place; Try not to wash with weak alkaline water or brush with a brush. Alkaline water corrodes the surface of gold and silver coins easily.

3. The color-changing silica gel should be placed in the place where gold and silver coins are stored, which mainly plays the role of moisture absorption; Silica gel is blue when it is dry and turns red when it absorbs water. It's best to put it in an anti-corrosion and moisture-proof safe.

4. When gold and silver coins are dipped in saliva, you can pinch the tooth edge of the coins, put them in clean and pure water, soak them for about half an hour, then rinse them with tap water 1 minute, and then put them on a new high-grade soft roll paper. Gently cover the washed coin with the same roll of soft paper, and gently press the soft paper covered on the coin with the thickest part of your palm. Keep changing to a dry place, deal with the water marks and saliva marks on the coins many times, then blow them with ear washing balls for a while to make sure they are dry before putting them into the coin plastic box.

5. When you look at coins, you can only take the tooth edge of the coin. If you accidentally press the fingerprint, you should deal with it immediately. The sooner you deal with it, the less damage it will do to coins. Never wipe with your hands or absorbent cotton. You can soak the coins with fingerprints in diluted hand sanitizer for a few minutes, and then wash them with saliva.

6. There is a slight red dot on the surface of the gold coin. When the red color does not turn black, it can be burned with a special lighter. First of all, look at whether there are stains on the surface of coins. If there is any stain, it should be cleaned before burning. When burning, the flame should be concentrated and shake against the red dot. Once the red dot is gone, turn off the lighter immediately and wait until the coin is completely cold before putting it in the plastic box.

7. The surface of the coin is stained with stains that can't be washed out by hand sanitizer, so it can only be treated separately. Gold coins can be washed with imported gold washing. Soak gold coins in the solution for a few seconds, rinse them under tap water for 3 minutes, and then suck up the water by removing saliva traces. When the red spots of gold coins turn black, they should also be washed in washing gold water first, dried and then burned. Some gold coins have a gray substance on their surfaces, which can also be cleaned with golden water. Operate as above. Silver coins are washed with imported silver washing water. Soak the silver coin in the solution for a few seconds, rinse it under tap water for 3 minutes (try to rinse it clean, otherwise the silver coin will turn yellow), and then drool to absorb the water.

8. Platinum coins and palladium coins are stained and cannot be cleaned with gold washing water and silver washing water, otherwise it will be covered with a layer of ash. You can only wash it with diluted hand sanitizer, and then wash it with water marks and suck it dry.

9. Individuals should not deal with the following situations: the edge of the coin is scratched due to the fall of the coin; There are fingerprints on the surface of coins, which are not cleaned for a long time, forming corrosion traces of coins; The surface of the coin is scratched by a hard object; The plastic bag was not removed, resulting in a gray mist on the surface of the silver coin; Silver coins have more white spots; There are corrosion spots on the surface of coins; The surface of copper coins has been oxidized to black and lost its original light. If the above situation occurs, it should be handled in a professional store.