here's an unofficial issue with a Lyons mintmark
Constantinopolis
Commemorative
Circa A.D. 330
14x16mm 1.4g
Obv. CONSTAN-TINOPO; laureate, helmeted, wearing imperial mantle, holding scepter.
Rev. Victory stg. on prow, holding long scepter in r. hand, and resting l. hand on shield, seen from side.
In ex. PLG •
