John III Ducas (Vatatzes), emperor of Nicaea, 1222-1254. Tetarteron (Bronze, 20 mm, 1.66 g, 12 h), Magnesia. Head of cherub with four wings; in left and right fields, trefoil of pellets. Rev. Iω / [...] John III standing facing, holding labarum in right hand and globus cruciger in left. DOC 57. SB 2115. About very fine.