Coin dated 1st century BC-second quarter? at Warren1998, pp. 358-359. J. Warren (Warren1984, pp. 21-22) suggests that the denomination of this type could have been quarter-obol or trichalkon.
“KC064 (Late Hellenistic bronze coin of Sikyon).” In Kenchreai Archaeological Archive, edited by J.L. Rife and S. Heath. The American Excavations at Kenchreai, 2013-2024. <http://kenchreai.org/gaek/kc064>