Sept Severus, AE20 of Seleukeia, Syria. AD 193-211. 6.71 g. AYTO KAI CEPTI CEYHROC CE, laureate head right. CELEYKEwN PIERIAC (retrograde), thunderbolt on table or stool. Engravers error of BMC 49; SNG Munich 998; Morel Coll. sale 639 (1886). Contributed by Nick Zacny, January, 2021 Ex Savoca 92nd Blue Lot 1491, Dec. 2020.