First of all, for people in non-banking institutions, it is impossible to judge the authenticity by the number of coins. Because the number of paper money is increasing when printing, as long as it is two Latin letters plus eight Arabic numerals, it is normal. As for the identification of counterfeit money: the fifth set of RMB anti-counterfeiting measures, 1, the watermark: the fifth set of RMB 100, and the fixed watermark in 50 yuan is the head of Mao Zedong people; 20 yuan has a fixed watermark for lotus, 10 yuan is a rose, 5 yuan is a daffodil, and 1 yuan is an orchid. The 2005 edition has watermarked denomination figures. 2. Red and blue colored fibers: On the fifth set of RMB 65,438+000 and 50 yuan, you can see that there are red and blue fibers in the paper. (This measure was cancelled in 2005) 3. Safety line: the fifth set of RMB 100 is a magnetic micro-word safety line; 20 yuan is a magnetic safety line with alternating light and shade. In 2005, the fifth set of RMB was a holographic window opening security line, with 50 yuan and 100 RMB window on the back. 4. Hand-carved headshots: The fifth set of Mao Zedong headshots, the main faces of all RMB banknotes are hand-carved intaglio printing process, with vivid images and strong sense of concavities and convexities. 5. Hidden denomination figures: The fifth set of RMB banknotes of various denominations has decorative patterns in the upper right corner of the front. Put your face near your eyes and rotate it 45 degrees or 90 degrees to the light source, and you will see Arabic numerals. 6. Light-variable denomination number: The denomination number "100" is printed on the lower left of the front of the fifth set of RMB 100 with new ink, which is green when viewed perpendicular to the face, and blue when viewed at a certain angle. 50 yuan can change from green to red. 7. Yin-Yang complementary printing pattern: The fifth set of RMB has a circular local pattern in the lower left corner of the front and the lower right corner of the back, which forms a complete ancient coin pattern through light. 8. Gravure printing: The fifth set of bank names, denomination figures and Braille denomination signs of RMB China People's Bank are engraved gravure printing, and the bumps are obvious when touched by fingers. 9. Number (relief): the fifth set of RMB 1999, RMB 100, 50 yuan is an even number in both directions, the horizontal number is black, and the vertical number is blue; The other denominations are two-color horizontal numbers, the left half of which is red and the right half is black. The 2005 edition is 100 yuan, and the 50 yuan is a two-color irregular number, with a large middle and small sides. 10. Offset microforms: The fifth set of banknotes with the denomination of RMB 100 and 20 yuan are printed with offset microforms such as RMB 100 and RMB 20 yuan. 1 1. Special paper: The fifth set of RMB is printed with special raw materials and special paper for printing money, and there is no fluorescence reaction under ultraviolet irradiation. 12. Color-changing fluorescent fibers: The fifth set of RMB can be seen that yellow and blue fluorescent fibers are randomly distributed in the paper under the irradiation of ultraviolet light with a specific wavelength. 13. Colorless fluorescent pattern: The fifth set of RMB coupons is printed with colorless fluorescent ink, which can be read by machine at the offset shading below the front line name. Arabic numerals can be seen under ultraviolet light with a specific wavelength. 14. color fluorescent pattern: the red lines in the oval pattern above the main scene on the back of the fifth set of RMB 100 yuan show bright orange under the irradiation of ultraviolet rays with a specific wavelength; The middle of the back of 20 yuan paper money shows a green fluorescent pattern under the irradiation of ultraviolet with a specific wavelength. 15, offset wiring printing: the fifth set 100 yuan, the traditional Chinese pattern on the front and left is printed by offset wiring technology, and each line consists of more than two colors. 16. Gravure wiring printing: The fifth set of RMB 100 back denomination number "100" and 20 yuan front left denomination number "20" are printed by gravure wiring technology, and the docking of the two inks is natural and complete. 17. Gravure microfilm: the fifth set of RMB 100. Gravure microfilm is printed on the decorative pattern in the upper right corner of the front of 20 yuan coupon. The words "RNB 100" and "RMB20" can be seen under the magnifying glass. (like 50 yuan) 18. Magnetic number: 100 Yuan's black cross number and 20 yuan's double-color cross number are magnetic and can be read by machine.

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