John III Ducas (Vatatzes). Emperor of Nicaea, 1221-1254. AR Trachy (26mm, 3.95 g, 6h). Magnesia mint. [KЄRO] HOЄI, facing bust of Christ Pantokrator; barred IC XC flanking / Iω ΔЄCΠ, facing half-length figures of Constantine, crowned and wearing loros, and the Virgin Mary, nimbate, jointly holding patriarchal cross between them. Cf. DOC 1a (for similar type in electrum); cf. SB 2072 (same); otherwise, unpublished. Toned, uneven strike. Near VF. Apparently unique.