| 摘要 |
<p>A sheet element, such as a banknote, a document with intrinsic value and the like, with security means, which comprises a sheet-shaped element that incorporates a security element, preferably in the form of a strip. Windows are formed in the sheet-like element at the security element. The particularity of the invention is constituted by the fact that the number of windows is correlated to the face value of the banknote.</p> |
