Coin from Sovereign Rarities Ltd. with a purchase note attached.
Graffiti Z on the reverse.
Byzantine Empire
Justin I (518-527), Solidus 518-519, Constantinople mint
Obverse: helmeted and cuirassed bust facing three-quarters to right, holding spear over shoulder and shield
D N IVSTINIANVS P P AVG
Reverse: Victory standing left, holding long jewelled cross surmounted by reversed P, star in left field, CONOB in exergue
VICTORIA AVGGG I
Gold, diameter 21 mm, weight 4.43 g