The mint at the ancient site of Kleonaeion in Phrygia. The mint was previously misread at Leonnaea. For the correction see
Thonemann, Peter. “Pessinous and the Attalids: A New Royal Letter.” Zeitschrift Für Papyrologie Und Epigraphik, vol. 194,
2015, pp. 117–28. JSTOR, http://www.jstor.org/stable/43909721. Thonemann suggests that Kleonnaeion may have been a brief renaming
of Pessinus. A. Ellis-Evans in the Survey of Numismatic Research 2014-2020 argues for a discrete settlement.