Watch List notes:

Justinian I Æ 20 Nummi. Constantinople, Dated RY 12 = AD 538-539. D N IVSTINIANVS P P AVG, helmeted and cuirassed bust facing, holding globus cruciger and shield; cross to right / Large K; cross above, P below, ANNO to left, XII (date) to right.
10g 29.3mm