Umayyad Caliph Abd al-Malik — cropped - Umayyad Caliph 'Abd al-Malik: 'Caliphal Image solidus' or Standing Caliph solidus struck from 74-77 AH. Based on Byzantine numismatic traditions. Note that, contrary to popular belief, there are official representations of the human figure in the Islamic context.
Photo Credit: By PHGCOM - Own work, photographed at British Museum, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=9490027