Constantine AE3. 323 AD. Trier. 

Obv: CONSTAN-TINVS AVG, cuirassed bust right wearing high-crested helmet
Rev: BEATA TRAN-QVILLITAS, Globe set on altar inscribed 
VO/TIS/XX; three stars above

Mintmark: dot-PTR-crescent

RIC VII Trier 389, rated C2

Contributed by Timeline Auctions, January, 2012