Constantine I (310-337AD)
AE follis- 1,98 gram- 19 mm, Trier mint, struck 321-322AD
obv: CONSTANTINVS AVG, helmeted and cuirassed bust right
rev: BEATA TRANQVILLITAS, altar inscribed VOTIS XX in three lines, surmounted by globe; three stars above, .PTR. in exergue
RIC 389