Dia, Bithynia, civic issue, 95–90 BC or 80–70 BC. Laureate head of Zeus right. / ΔIA[Σ ]beneath eagle standing left Monogram in left field. Sun god countermark on obverse. I am about 75% certain of the attribution - should be a thunderbolt under the eagle but it might be off the flan. The other less likely possibility is Thessalian confederacy/