The monograph The lead seal of Grand prince Stephen Nemanja in the Historical museum of Serbia is dedicated to a seal from the second half of the 12th century, which was purchased in 2023 and the Museum received one of the most important items in its collections. Author Benjamin Hekić, Ph.D., research associate at the Institute of History, provides a detailed description of the seal of the progenitor of the most important medieval Serbian dynasty, Nemanjić.