CONSTAN-TINVS AVG, laureate head right. / PROVIDEN-TIAE AVGG, campgate with two turrets and star, no doors. Mintmark SMKBꞏ. 20mm, 2.77 grams. Cyzicusmint. RIC VII 57. SKU X3412-53304

Very rare, rated R5 in RIC. The bust is quite unique, with Constantine looking up, supposedly signifying his piety.