MEDIEVAL GERMANY. Köln, Archdiocese. Otto I. 936-973. AR denar. 1.45 gm. 17 mm. Short cross with a pellet in each angle; + OTTO + REX (base of TT and most of lettering for REX visible) / Monogram (not present); [C]OLONI, large A below; a "horn" right. Cf. DeWit 1969 (€255 plus commissions). Good Very Fine; pleasing old toning over good metal.