John Comnenus-Ducas. As emperor of Thessalonica, 1237-1242. BI Trachy (14mm, 0.50 g, 6h). Thessalonica mint. Facing head of cherub, with four wings / John, holding akakia, and St. Demetrius, holding spear, standing facing, supporting long cross between them. DOC 25a; SB 2210. Fine, earthen green patina.