John III Ducas (Vatatzes), emperor of Nicaea, 1222-1254. Tetarteron (Bronze, 18.5 mm, 2.47 g, 6 h), Magnesia. Head of cherub with four wings; in left and right fields, ·: and :·. Rev. I/W / [...] - O/[...] John standing facing, holding labarum in right hand and globus cruciger in left. DOC 57. SB 2115. Dark patina with a few earthen deposits. Very fine.