Modern line-drawing of ancient Assyrian royal seal, dating to the 18th century BC.
Fikri Kulakoğlu
2013
Melissa Eppiheimer (2013) <i><a rel="nofollow" class="external text" href="https://www.jstor.org/stable/10.1086/669098">Representing Ashur: The Old Assyrian Rulers’ Seals and Their Ur III Prototype</a></i>