Watch List notes:

Johannes, kouboukleisios, mid 11th century. Seal (Lead, 23 mm, 9.80 g, 12 h). Θ / N/I-K/O/ΛA/O, Nimbate facing bust of Saint Nicholas, raising his right hand in benediction and holding book of Gospels in his left. Rev. +KЄ RO/HΘЄI TⲰ / CⲰ Δ૪, IⲰ / K૪R,KΛ,/C in five lines, decorations above and flanking the last line. Cf. Laurent, Corpus V.1 175. Traces of overstriking on the obverse, otherwise, very fine.