EMPIRE OF NICAEA. John III Ducas-Vatatzes. AD 1222-1254. Æ tetarteron (2,78 g). Magnesia mint. Half-length facing bust of John, holding labarum and globus cruciger surmounted by patriarchal cross / Cross within pelleted crescent. Dark brown patina. Difficult issue to find in this condition. DOC 59a, SB 2117 Grade: 01