Useful. The Certificate of Permanent Collection is an appraisal of the authenticity of the collection by the Palace Museum. The authenticity of the collection and the collection from the Palace Museum can be confirmed by the signature and number of the experts on the appraisal book. The certificate of permanent collection is a way for the Palace Museum to protect the rights and interests of collections. The certificate holder can prove that he is the legal owner of the collection through the certificate, and ensure that the rights and interests of the collection are not infringed.