BYZANTINE SEALS. John Kostomyres, proedros, Circa 11th century. Seal or Bulla (Lead, 17.5 mm, 4.67 g, 11 h). O/ IΩ / O -XP/CT'/M' Draped bust of St John Chrysostom holding the Book of Gospels and raising his right hand in benediction. Rev. +KE BΘ/ IΩ ΠPOE/ΔPΩ TΩ K/CTOMYP in four lines within plain doted border. BZS.1955.1.3108 (same bulloterion). Rare and in exceptional quality . Some uncleaned deposits as found, otherwise, good very fine.