EMPIRE OF NICAEA. John III Ducas (Vatatzes) (1222-1254). Tetarteron. Magnesia. Obv: Half-length facing bust of John, holding labarum and globus cruciger surmounted by patriarchal cross. Rev: IC - XC. Patriarchal cross set upon steps. Sear 2120. Condition: Good fine. Weight: 3.3 g. Diameter: 21 mm.