Prototype: Sikyon, ca. 330–200 BCE. Perhaps it bore an earlier impression (e.g., of an Aigina bronze, ca. 300 BCE, with incuse square reverse) before someone decided to mold the foil over the obverse of a Sikyonian coin instead.
Preservation comment
Wear F. Good condition but surface is crumpled and creased.
“KM240 (Early Roman Gold-Foil Impression of Hellenistic Sikyonian Coin).” In Kenchreai Archaeological Archive, edited by J.L. Rife and S. Heath. The American Excavations at Kenchreai, 2013-2025. <http://kenchreai.org/gaek/km240>