What kind of badge can have collect value?

What kind of badge can have collect value?

Collections with small circulations are the most valuable, and the value increases with age.

Two, with great historical significance, if it is a major historical event, issued by important historical figures (like the emperor, sun yat-sen, yuan shikai, etc.), or the royal family, the national government and other authority issued by the badge contains extraordinary significance, high value.

Thirdly, the commemorative medallion of major organizations also has higher appreciation space.

Fourth, the product photograph integrity, the printing character is clear, the material material valuable badge collection value is also relatively high.