Watch List notes:

BITHYNIA. Tium. Septimius Severus, 193-211. Tetrassarion (Bronze, 30 mm, 18.36 g, 1 h). AYT•K•CЄΠT•CЄOYHPOC•AYT Laureate head of Septimius Severus to right; on neck, countermark of H within oval incuse (revalued as an octassarion). Rev. TIANΩN Zeus seated left, holding thunderbolt in his right hand and scepter with his left; to left at feet, eagle standing left, looking up. BMC -. SNG Leypold -. SNG von Aulock 952. For countermark, Howgego 821ff. Very rare. Flan cracks and with some light green deposits, otherwise, very fine.