如何保存古硬币?

2025-03-29 22:38:13
推荐回答(2个)
回答1:

如何保存硬币 在我国,集藏硬币的历史渊源久远。自改革开放以来,群众性的收藏世界硬币热方兴未艾,它作为主要藏品的地位已为越来越多的集藏者所认识。由于缺乏有关知识介绍,缺乏交流和媒体宣传,以至一些收藏者对硬币的保存无所适从。经常可见的是,很多精制硬币(Proof)原来是有气密塑封包装、光亮如镜的,可在市场见到的却是开了封的,并且硬币镜面已无踪影,而指纹或划痕却不少。一些硬币在市场上交流一段时间后就伤痕累累、面目全非了。硬币虽由金属材料制成,有一定的硬度,似乎不易损坏,实际上保存硬币不是容易的事情。硬币的品相按美国标准划分为70个等级,正确的保存方法应使硬币的腐蚀过程减缓或停止,免遭硬伤,尽量保持原来的品相等级。 保存不当,往往只增加一条用放大镜才能看见的划痕或一个针眼大小的黑点就会导致硬币降低一个以上等级,而在克劳斯标准硬币目录上一个等级相差几百甚至上千美元的硬币决非个别。正确保存硬币,不但是保护好你的藏品,也是保护好你的资产。从另一角度讲,同时也是为社会下一代保存好历史遗产。 为了保存硬币,先从品相恶化谈起。硬币的腐蚀过程取决于以下因素:硬币材质的化学稳定性(成分构成)、包装用的与硬币接触的材料、存放硬币的大气条件和硬币的接触观摩。一般而言,金比银耐腐蚀;银比铜耐腐蚀;锌、铝、铁等金属较易被腐蚀。对合金而言,有时取决于化学性质较活泼的金属,比如纯金稳定性较佳,而当在金中加入铜构成合金后,则硬币易出现黑点。但黄铜(铜锌合金),则在大气中比纯铜更耐腐蚀。包装材料中聚氯乙烯对硬币有害,聚氯乙烯在常温下会逐步析出增塑剂腐蚀硬币,这可造成不可挽回的损失,对这一点应有足够的注意,特别是对于铜和铜合金硬币。在国外,80年代初已广泛认识到使用聚氯乙烯的危害,并已在硬币的封装中淘汰了这一材料,改用聚乙烯。空气中的水蒸气、硫化物和二氧化碳等物质对硬币也是很有害的,如硫与银反应成硫化银,使银币表面变灰变黑。空气中的潮气也加速硬币的氧化过程。在欣赏过程中,用手接触裸币,使汗迹在硬币上留下指纹;唾液和空气中的尘埃降落在硬币上,这些附加物都将加速硬币的腐蚀过程。 为了保存好硬币,首先应选好包装手段,既要便于观赏,又要有利于保护硬币,这视个人的条件而定。可选择的包装有不属聚氯乙烯的塑料盒、带聚脂薄膜圆孔的纸夹、聚脂薄膜袋、纸袋等。可选的材料有聚乙烯、聚丙烯、聚脂薄膜。为了便于欣赏,也可在透明包装的基础上放入集币册内,关键的一点是不能选用含聚氯乙烯的材料来包装存放硬币,它的危害绝不能低估。为了隔离空气,一般有气密和真空封装两种方法。气密指隔离空气,但不抽净包装内的空气。真空封装将使包装材料与硬币表面紧密接触,这也可能损害硬币。包装采用热塑压或超声熔合手段,这些手段还没有普及,一般只在造币厂中包装新币和在评级机构包装定级后的硬币时使用。最简单的隔离空气的方法是将硬币浸泡在无水酒精中,这种方法缺点是不便于观赏,但效果较好。硬币应存放于通风和空气干净、干燥的地方。 一般不宜直接拿玩裸币,特别是不应触摸精制币、未流通币(UNC)或高档币。硬币中手接触过的地方,一定是首先腐蚀变黑的地方。如确要拿放硬币,应用干净的软纸或布隔开手拿硬币的边缘。 硬币一般不必清洗,特别是不能用普通橡皮或市面上出售的玻璃纤维擦拭棒擦拭,这样会划伤硬币表面。如果硬币表面上有有害材料包装后产生的绿粘液,可用无水酒精清洗。对于硬币上的污迹、指纹,也可用酒精清洗,这对于新迹有效,并可防止污迹和指纹对硬币的进一步侵蚀。对于旧迹,必要时可用无砂粒高级绘图橡皮适度擦试。对于粘有大块污物和特别脏的硬币,有条件时可用超声波清洗机进行清洗,这时应用酒精作为清洗液。硬币应用网袋悬吊在清洗液中,以防止硬币直接与清洗机内壁接触而导致损伤,因为内壁的机械振动与硬币碰撞将损伤硬币。用这种方法可去掉污物而又不擦伤硬币。要注意的是,清洗不能提高硬币的等级,只有利于观赏(除去粘附在硬币上的多余物质)。硬币的品相等级仅取决于硬币本身的磨损程度。

回答2:

有专门的古币存放器!钱币密封保存,减少氧化!一般存放价值较大的古币 在欣赏和鉴赏时用镊子来取和放! 在这,作为一名钱币爱好者,应该多看一些书,来加强自己在这方面的修养!

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