Watch List notes:

Anonymous. Circa 11th century AD. PB Seal (24mm, 14.04 g, 12h). Facing bust of uncertain saint, holding cross and raising hand in blessing / Facing bust of St. Nicholas; [...] to left. И/[I]/KO/Λ[...] to right. Light brown patina, some roughness, off center. Near VF.

From the Exarch Collection.