The aim of this paper is to analyze symbolic inspirations in medieval sphragistics of Silesian dukes, with particular emphasis on their role as a tool for building power prestige and as an example of cultural transfer. The discussion will focus on selected ducal seals, created as consciously constructed carriers of ideological and political content, which served to legitimize power and create an image of the ruler corresponding to his needs, ambitions, and aspirations. The main emphasis will be placed on the borrowings and adaptations of patterns from Western European culture that appear in their iconography. A detailed analysis of these elements will allow us to determine both the extent to which individual Silesian rulers drew upon external iconographic patterns and adapted them to the local political and cultural context of Silesia, as well as the purposes their use was intended to serve.