CNG - Empire of Nicaea. John III. Hyperpyron $142.50 Feb-28-01 Seller cngcoins Empire of Nicaea. John III, Ducas Vatatzes. 1222-1254 AD. AV Hyperpyron (4.47 gm). Christ enthroned facing, dot to left, M-like letter to right. John standing left, crowned by Virgin Mary. DOC 15c; SB 2073. VF, edge splits. 724856