AAH on ebay.
Constantine I AE3 "Campgate-Trier" 
$29.19   
Jan-11-07

Constantine I AE3 "Campgate-Trier" Constantine I 
AD 306-337 AE3." 
Obv: CONSTA-NTINVS AVG- Laureate head right. 
Rev: PROVIDEN-TIAE AVGG - Campgate with two turrets and one star. 
Exe: PTR dot in crescent.
Trier mint: AD 322 = RIC VII, 475