Demetrios, metropolitan bishop of Kyzikos, 10th century. Seal (Lead, 21 mm, 7.14 g, 12 h). AΓ, / ΔH/M'-TPI/Є RO/HΘ, Bust of St. Demetrios, nimbate, wearing jeweled chlamys, holding martyr's cross in his right hand. Rev. +ΔHMH/TPI[Ⲱ] MH/TP[OΠ]OΛI/TH KVZI/KOV in five lines. DO Seals III, 53.3. Laurent, Corpus V/1, 350. Leu 7 (2020), 1982. Zacos II 446. Some deposits and flan faults, otherwise, good very fine.

Our Demetrios, the bishop of Kyzikos, may well be the addressee of a letter by patriarch Nikolaos I Mystikos (912-925) containing advice on how to approach some disobedient clerics in his diocese