1, the number of leaves on the left and right sides of the laurel constellation should be different. The number of leaves on the left is 9 and the number of leaves on the right is 8. Perfect symmetry is false. 2. The signboard on 2.MCM bag is made of brass, and the surface is smooth as a mirror, which can be used as a mirror. False is not bright enough or uneven. 3.3. The serial number of the bronze medal of MCM packaging is a letter +4 digits, and the serial number of each package is unique. If the serial numbers of the bags in a shop are the same, they are fake. 4. The plastic protective film on the copper plate encapsulated by the new MCM is cross-shaped, and the screws at the four corners are not covered. 5. The screws at the four corners of the bronze medal are mostly flat head screws, which can be removed. 6. The registered trademark R under 6.MCM logo should be located in the center of the bronze medal.