Here are three contemporary images that include an asymmetrical mace, probably known as the qurz from the 12th-13th centuries. This was probably the forebear of the animal-headed mace of later centuries.
https://forums.totalwar.org/vb/attac...3&d=1399025740
A Shahnama scene "The Iranians leave the castle of Farwad", on a Seljuk tile, Iran, 12th-13th centuries
https://forums.totalwar.org/vb/attac...4&d=1399025808
Faridun and Kawad, Seljuk Bowl, Incribed "Wealth", early 13th Century
https://forums.totalwar.org/vb/attac...5&d=1399025843
King with attendants, Seljuk Bowl, late 12th early 13th centuries AD
& drawings of two surviving maces:
http://warfare.6te.net/Turk/Nicolle-Islam-366-mace.jpg
366. Iron mace-head, 11th to 13th centuries AD, Iranian, British Museum no. 838.89, London.
http://warfare.6te.net/Turk/Nicolle-Islam-388A-mace.jpg
388A Iron mace-head, 12th-13th centuries AD, Iranian, Heeramaneck Galleries, New York (Grab P).
MIRROR SITE
A Shahnama scene "The Iranians leave the castle of Farwad", on a Seljuk tile, Iran, 12th-13th centuries
Faridun and Kawad, Seljuk Bowl, Inscribed "Wealth", early 13th Century
King with attendants, Seljuk Bowl, late 12th-early 13th centuries AD
Druzhina
Seljuk Turk Illustrations of Costume & Soldiers