Watch List notes:

Byzantium, Justinian I (527-565), AV Solidus, 4.31g, Constantinopolis, Officina O, diademed and cuirassed bust three-quarters facing, rev. Victory standing facing, CONOB in exergue, a bolder very fine.
Provenance
The Quinn Collection
Purchased Munzen-Fachgeschaeft (Frankfurt), 12 May 1992 - DM200
Estimate: £200 - £250