John Comnenus-Ducas. Empire of Thessalonica, 1237-1242. AE Trachy, small module, 19mm, 0.70 g. Thessalonica mint. St. Demetrius standing facing OLGIOC D.., John, no beard, on left, being crowned by St. Demetrius on right. DOC 15; SB 2200. Courtesy of byzantiumcoins/store on vcoins.com