Watch List notes:

Justinian I. 527-565. AE decanummium (13.2 mm, 2.37 g, 1 h). Rome mint. D N IVSTINIAN[VS PP AVG] (or similar), diademed, draped and cuirassed bust of Justinian right / Large X within wreath. SBCV 308a; . VF for type, full flan, somewhat rough green patina.

Ex Leo Hamburger 1890's.

This coin comes from a large group of Roman Provincial, Byzantine and Vandalic coins which were part of Leopold Hamburger's inventory. More information on Mr. Hamburger can be found here:https://www.coinbooks.org/v20/esylum_v20n42a19.html