Daehn, William E. “Minting Anomalies in Greek Sicily: Stepped Flans, Edge Ridges, and Edge Splits”. KOINON: The International Journal of Classical Numismatic Studies 6 (December 14, 2023): 50–60. Accessed October 8, 2025. https://archaeopresspublishing.com/ojs/index.php/koinon/article/view/2339.