Constantinopolis from Thessalonica with unusual helmet

[Victor]

I bought this coin because it has an unusual helmet. Perhaps really only something a specialist would notice or even care about, the helmet is taller than normal. The composite shows a normal type from Thessalonica to compare with.

Constantinopolis
A.D. 330-3
18x19mm   2.6g
Obv. CONSTAN-TINOPOLIS laureate, helmeted, wearing imperial mantle, holding scepter.
Rev. Victory stg. on prow, holding long scepter in r. hand, and resting l. hand on shield.
in ex. SMTSΔ
RIC VII Thessalonica 188