Watch List notes:

BYZANTINE SEALS, Administrative. Sergios, notarios, circa 9th century. Seal or Bulla (Lead, 21 mm, 10.68 g, 12 h). Cruciform invocative monogram formed by the letters of the legend ΘΕΟΤΟΚΕ (or ΘEE KYPIE) BOHΘEI; around, TΩ-CΩ / ΔOY-ΛΩ "Lord please aid your servant" . Rev. CEPΓI/Ω NOT/APIΩ /+ in four lines within plain dotted border. Possibly unpublished. Very fine.
From the collection of a scholar.