Constantine I campgate from Alexandria with circular design on turrets

[Victor]

I just noticed that this camp gate has unusual circular designs on the turrets


Constantine I
A.D. 325- 326
19x20mm    3.3gm
CONSTAN-TINVS AVG; laureate head right.
PROVIDEN-TIAE AVGG; camp gate, two turrets, no doors, star above.
In ex. SMALA
RIC VII Alexandria 34

[tjaart]

Well spotted! I will have to keep my eyes open for an example.