Multispectral recording enables the recording of a wide spectrum of electromagnetic radiation from the visible part of the spectrum, including the infrared and ultraviolet part of the spectrum. This technology enables the retrieval of information that the human eye cannot see and its application is diverse (medicine, forestry, quality control of food and drugs, forensics, etc.). One of the applications on which this paper is based is the detection of watermarks. It is multispectral recording that enables precise detection and display of watermarks, which provides historians and other researchers with important information about the historical background of the time in which the watermark was created. This work represents a good basis for further research on watermarks, but it is important to be careful in planning all research steps in order to ensure the reliability and quality of the results. First of all, it is necessary to choose the appropriate book for research, as well as the sample papers used in it. Also, it should be checked whether the selected filters of the multispectral system are optimal for obtaining the best results. It is recommended to test other filters and compare their effectiveness and when all necessary photos are collected, they need to be processed in computer programs. It is important to ensure that a consistent processing method is used to ensure quality contrast and clarity. Finally, after obtaining the digitized form of the watermarks, it is necessary to carry out further analyzes in order to assess the quality of their reconstruction. This includes measuring their size and depth, determining the accuracy of their position in relation to the text.