Constantine I AE3 "Vows X-XV" RARE US $203.60 Aug-30-02 Constantine I AE3 "Vows X-XV" RARE *FTN Constantine I "the Great" AD 306-337 AE3 Obv: CONSTA-NTINVS AVG - Helmeted bust right, cuirassed Rev: VOT X ET XV F - Laurel wreath surrounding inscription and mintmark Exe: RQ Rome mint: AD 320 = RIC VII, 207(Q=r4 Rare), page 318 , 3.10 g.