Constantine II, AE18, Trier. 322-323 AD.

Obv: CONSTANTINVS IVN NOB C, laureate and cuirassed bust 
right, holding spear over shoulder and horse by the
bridle before.
Rev; BEATA TRAN-QVILLITAS, large globe on an altar inscribed 
V dot O - TIS - XX in three lines, three stars above.
Mintmark: PTR dot.

RIC VII Trier 381 var (mintmark); UK PAS finds database 
296548; not in BMC Collection. Found by metal detectorist
Toby Phillips in England. 

Dane's collection, Sept. 2010.