Watch List notes:

BYZANTINE SEALS. Kosmas, monk and Presbyteros, circa 11th century. Seal or Bulla (Lead, 18 mm, 4.11 g, 12 h). MI-XΛ Winged, nimbate and cuirassed bust of the Archangel Michael, holding scepter with his right hand and globus with his left hand. Rev. ΘΚΕ ΒΘ,/ΘEI KOC/MA (AX) KAI/ΠPECBY/TEPΩ = "Lord, aid (your servant) Kosmas, monk and Presbyteros" in five lines within round linear border. Unpublished in the standard references. Nearly very fine.