I'm still scratching my head trying to figure out why anyone would find it necessary to make a fourree copy of a tiny Greek fraction coin? But they did; and they did a wonderful engraving job. This coin type, with its strange markings on the boars shoulder, does not exist. The markings look almost like veins or a birds legs and talons.
I'd imagine that obols were rarely checked for counterfeits due to their low value. Maybe faking an obol was a safer - though inconvenient - method of counterfeiting. Lovely coin btw!