BYZANTINE SEALS, Imperial Families. Constantinos Diogenes, Protoproedros & Dux of Cappadocia, circa 1068-1073. Seal or Bulla (Lead, 28 mm, 16.00 g, 12 h), first born son of the emperor Romanus Diogenes. O / ΘΕ/Ο - Δ/Ω/ΡΟ/C Nimbate St. Theodore standing facing, bearded, dressed in military attire, and holding a spear with his left hand and resting his right hand on his; the whole within a circular dotted border. Rev. +KE BΘ, / ΚΩΝ Α'ΠΡΟ/ΕΔΡ S Δ૪ΚΙ / ΚΑΠΠΑΔΟΚΙ/ΑC ΤΩ ΔΙΟ/ΓΕΝΗ (+ Lord aid Constantine Diogenes, Protoproedros and Doux of Kappadokia) in six lines, the whole within a circular dotted border. Apparently unpublished: Cheynet, Diogénai, and Zacos -. Clear and bold. Extremely fine.