Coin sold at 21/10/2004 (dd/mm/yyyy)
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Constantine I  AD 306-337 AE3 
Obv: CONSTAN-TINVS AVG - Diademed head right. Rev: PROVIDEN-TIAE AVGG - Campgate with two turrets and one star. Exe: SMK (delta) Cyzicus mint: AD 329-330 = RIC VII, 58, page 652 - British Museum. / 3.08 g.