Michael I Keroularios. Patriarch of Constantinople, 1043-1058. PB Seal (45mm, 62.73 g, 12h). Type A. [+ ΘКЄ ROH]ΘЄI Tω Cω Δ[OYΛω], the Theotokos Hodeghetria standing facing, holding Holy Infant; MP ΘV, macron above each, across fields / – (four pellets) –/MIXAHΛ/APXIЄΠI/[C]K KωNCTAN/TONOVΠOΛ/[N]ЄAC Pω/[– M –] in seven lines. BLS II 15 . Gray and tan brown patina, light cleaning marks on reverse. Good VF. Lot comes with plaster cast of the seal.
From the Rome on the Euphrates Collection. Ex Classical Numismtic Group 63 (21 May 2003), lot 1674.
Michael was patriarch during the dispute with Pope Leo IX in Rome that lead to the Great Schism of 1054. He was also deeply involved in the maneuvering that led to the overthrow of the emperor Michael VI in 1057, and was granted vastly expanded earthly authority by the new emperor Isaac I. His new powers went to the Patriarch's head, and when Michael began to declare himself equal in status to the emperor he was deposed the following year.