Constantine II AE Follis, 3.29g; 19mm, 322-323 AD. Trier. 

Obv: CONSTANTINVS IVN NOB C, laureate bust left wearing trabea, 
holding Victory and mappa
Rev: BEATA TRAN-QVILLITAS, large globe on an altar inscribed 
VO / TIS / XX in three lines, three stars above

Mintmark STR dot. 

RIC VII Trier 382 var (mintmark with only one dot); another 
example in M. Macgregor's collection. Very Rare (R4).

With permission of Roma Numismatics, December, 2009