1992年底,云南省红河州公安处送来4张当地金融部门在清点钞票时发现的可疑人民币,要求鉴别真伪。这4张可疑人民币分别是1965年版和1980年版的10元券。经与相应年版的真币样本比对检验,发现可疑人民币的衬景及底纹不但模糊,色泽也与真币明显不符;雕刻凹版印刷的主景图案和文字模糊不清,已无法分辨出雕刻版的线纹,印迹也没有真币那样强的立体感(见图1);可疑人民币的纸张粗糙、增厚、无光泽,钞票规格分别比真币小2.2%～3.7%.这些明显的差异难以用以往的鉴定经验进行解释,很容易被认为是假币。但进一步比对又发现,可疑人民币各部分图文的宏观形态、各色图案的组合安排和比例完全与真币一致,如此精确的制版技术与粗糙的图文印迹相矛盾;可疑人民币的水印无异常,与真币样本相比也有一定程度的收缩;可疑人民币上尽管图文模糊,但接线印刷的底纹却非常清晰,不同色的线纹衔接准确(见图2),这是目前各犯罪团伙伪 By the end of 1992, Honghe Prefecture Public Security Bureau of Yunnan Province sent four suspicious renminbi (RMB) found by the local financial departments to count the banknotes, asking for authenticity. The four suspect renminbi are the 1965 and 1980 versions of the 10 yuan coupons. Compared with the corresponding version of the authentic sample comparison test, found that the suspicious renminbi lining and shading is not only blurred, the color is also obviously inconsistent with the real currency; engraving intaglio printing of the main pattern and text blurred, has been unable to distinguish the carving (See Figure 1); suspicious RMB paper is rough, thick, dull, banknote specifications were 2.2% ~ 3.7% smaller than the real currency. These significant differences Difficult to explain the past experience with the identification can easily be considered counterfeit money. However, further comparisons also found that the macroscopic forms of the suspicious parts of the RMB, the arrangement and proportions of the colored patterns are completely consistent with the real ones, and such accurate platemaking technologies are contradictory to the rough graphic imprints. No suspicious RMB watermarking is found , Compared with the real currency samples also have a certain degree of contraction; suspicious of Renminbi despite the graphic blur, but the wiring printing shading is very clear, different colors of the line pattern convergence (see Figure 2), which is the current criminal gang Pseudo