Silver tetradrachm, Apollo on omphalos type
Obv.: Diademed head of Seleucus III r., dotted border.
Rev.: ΒΑΣΙΛΕΩΣ on r., ΣΕΛΕΥΚΟΥ on l., Apollo, slight drapery on thigh, seated l. on omphalos which is placed upon a plinth or basis, resting hand on grounded bow.
Reference: San Rafael, California, MNL collection, ex Gemini 11, 12 January 2014, lot 249.
A plinth beneath the omphalos is anomalous, but appears to be clear and not the product of overstriking or double striking.