Before this coin, I had only seen the eyes to heavens bust type on commemoratives from Trier. Unfortunately this coin has some preservation issues, but it is still a great coin. The second picture below is a normal type of the same RIC number.
Constantinopolis Commemorative
A.D. 334-5
17mm 2.0gm
Obv. CONSTAN-TINOPOLIS laureate, helmeted bust looking up to Heaven, wearing imperial mantle, holding scepter.
Rev. Victory stg. on prow, holding long scepter in r. hand, and resting l. hand on shield.
in ex. dot BSIS dot
RIC VII Siscia 241