ClipArt ETC
"The royal seal or signet used by the Chaldean and Assyrian kings was in the form of a small cylinder, having figures and characters engraved in the surface. This cylinder when rolled upon wax or other plastic substance left the king's name and emblems set in relief upon the material used in sealing."

The Seal of Ilgi

"The royal seal or signet used by the Chaldean and Assyrian kings was in the form of a small cylinder,…