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珍稀野生动物特种纪念币目前已发行了10套10枚,是清一色的紫铜质币。许多钱币爱好者在 收藏保在紫铜质特种币过程中,在正常室温和湿度的情况下几乎都遇到过币面被轻度氧化,致使币面光洁度下降的问题,比较直观的是币面出现粉红色水斑印记。人们都认为这是收藏方式欠妥的问题,其实也不尽然。 首先,紫铜质特种币材质单一,耐氧化性较差;可以说比较娇嫩,发行过程中因人们也像处理其它币种那样随便,于是就埋下了祸根。如手指触摸币平面留下指纹,更有甚者用出汗脏手摸拿紫铜币,都会给
Rare Wild Animal Special commemorative coins have been issued 10 sets of 10, is all-copper coins. Many coin lovers in the collection of copper in the specialty coins in the course of the normal room temperature and humidity almost encountered encountered in the currency surface is slightly oxidized, resulting in currency surface finish down, the more intuitive is the currency surface Pink water mark. People think this is a defective collection of ways, in fact, not always. First of all, copper special coins a single material, poor oxidation resistance; can be said to be more delicate, the distribution process because people are also treated as other currencies as casually, so planted the curse. Such as finger touch coin plane to leave fingerprints, even worse with sweat dirty hands touch copper coins, will give