忌受潮:当代硬币,绝大多数是金属材料制成的,受潮后容易锈蚀,因此,收藏时要放在干燥处,远离潮湿的环境。密封的纪念币卡或样品以及金银币,最好不要开启封套或密封盒,以免进入空气。忌手摸:新发行的硬币或清洗过的硬币,最好不要用手直接接触,尤其不能用湿手或汗手乱摸。因为用手直接接触硬币,容易留下指纹或汗 Avoid damp: Contemporary coins, most of the metal material is made of, easy to rust after damp, therefore, when stored in a dry place, away from the humid environment. Sealed commemorative coins or samples and gold and silver coins, it is best not to open the envelope or sealed box, so as not to enter the air. Gesture: Newly issued coins or washed coins, it is best not to use your hand direct contact, in particular, can not touch with wet hands or sweat. Because the direct contact with the coin hand, easy to leave fingerprints or sweat