Though the reverse is a common type, this issue from Cyzicus is a bit rarer (though there are eight workshops) and this one is a pretty sharp example. On the reverse, you can even make out the palm branch that Victory is holding over her shoulder.
Constantine I
A.D. 313-315
20x22mm 3.3gm
IMP C FL VAL CONSTANTINVS P F AVG; laureate head right.
IOVI CONS-ERVATORI; Jupiter standing l., chlamys across l. shoulder, leaning on sceptre and holding Victory on globe in r. hand; eagle with wreath to l. on ground; Γ in right field.
in ex. SMK
RIC VII Cyzicus 3
