Isaac II Angelus. First reign, 1185-1195. Æ Tetarteron (20mm, 3.06 g, 6h). Thessalonica mint. Facing bust of St. Michael the Archangel, holding trefoil-tipped scepter and globus cruciger / Facing bust of Isaac, holding cross-tipped scepter and akakia. DOC 5a; SB 2005. VF, earthen green patina.