FIELD: physics.
SUBSTANCE: method for producing a valuable document is described, that is protected from the partial forgery by composing from fragments of other documents. The method comprises applying, at least, one serial number to the document pictorial field, and applying a marking to the extended portion of the document pictorial field, made in the form of blocks of the graphic elements forming a personalized security document code. The linear size of each graphic element is from 0.1 to 1.0 mm, the technical gaps between the blocks of the graphic elements are not more than 25% of the linear dimension of these blocks, but not less than the size of one graphic element.
EFFECT: producing a valuable document with an increase in the reliability of the instrument to determine its authenticity.
7 cl, 3 dwg, 3 ex
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