Constantine II AE3. Aquileia. 

CONSTANTINVS IVN NOB C, laureate head right 
CAESARVM NOSTRORVM around VOT X within wreath, palm branches to left and right. 

Mintmark: AQT. 

RIC VII Aquileia 111,  rated R3

With permission of Auktionshaus H. D. Rauch GmbH - E-Auction 24, Lot 459, Sept. 2017.