2. Check the material and texture of the circulation voucher. At that time, the real circulation vouchers should be paper. If it is found that modern materials are used or the paper texture is wrong, it may also be counterfeit.
3. Illuminate the light source on the circulation voucher with a flashlight and other light sources to see if there is reflection. If reflection is found, it means that the negotiable instrument may be painted or painted, and it is probably counterfeit.
Finally, if you are still not sure about the authenticity of the circulation voucher, you can ask professionals to identify it, such as museums or antique shops. They usually have more professional skills and experience and can identify the authenticity of circulation documents more accurately.