古钱币的真伪鉴定是一项技术含量很高的复杂工程,是钱币收藏者必修的一门课程。开门的钱币容易判断,不开门的钱币,难以判断准确。一般来说,古币鉴定最难,机制币次之,纸币较容易。只有掌握相关方面的知识,多接触实物对比,多与泉友切磋交流,多积累实践经验,才能不断地提高鉴定水平。笔者通过相关 The authenticity of ancient coins identification is a highly technical complex project is a compulsory coin collectors course. Open the coin easy to judge, do not open the door of the coin, it is difficult to judge accurately. In general, the most difficult identification of the ancient coins, the mechanism of the currency, the notes easier. Only by mastering relevant knowledge, making more contact with objects, more exchanges and discussions with Spring Friends and accumulating more practical experience can we continuously improve the appraisal level. I passed the relevant