1. Material: Real space commemorative coins usually use high-quality materials, such as silver and gold. You can check the material identification of commemorative coins, or use professional tools for material testing.
2. Weight: Real commemorative coins usually have a standard weight. You can use a balance or a professional commemorative coin weight measuring instrument to test it. If the weight obviously deviates from the standard range, it may be counterfeit money.
3. Details: Observe the details of commemorative coins. Real money generally has clear patterns, carvings and fonts. If the details are vague, or there are typos, spelling mistakes and other problems, it may be counterfeit.
4. Edge processing: Observing the edge processing of commemorative coins, real coins usually have smooth and delicate edge processing. If the edge is rough, it may be counterfeit money.
5. Packaging and certificates: Real commemorative coins generally have professional packaging boxes and corresponding certificates. You can check the quality and printing of the box, as well as the content and validity of the certificate.
In addition to the above points, you can also refer to the opinions of professional commemorative coin appraisal institutions or experts, who have more experience and professional equipment to identify the authenticity of commemorative coins. If there is any doubt about the authenticity of commemorative coins, it is recommended to consult professionals or institutions to obtain accurate appraisal results.