Kings of Macedon Antigonos II Gonatas, 277-239 B.C. AE20 Obv: Helmeted head of Athena, right Rev: Pan erecting trophy, between B and A. ANT monogram in lower left. HGC 3.1, 1049 20 mm, 4.3g. Here's what I find interesting about this common coin: Look at the lower right of the obverse, doesn't that look like an inscription? I can almost make out a retrograde POY between 3 and 4 o'clock. I've never heard of this coin--or just about any early Greek bronze--having an obverse inscription. The auction listing said: "Possible early Celtic imitation?", but I don't think that's relevant. Instead, I am offering 4 possible explanations, in increasing order of likelihood: 1) (least likely) This coin has been overstruck on a later provincial coin, probably from Marcianopolis to judge by the density of the lettering, and is proof that aliens visited the ancient Greeks and taught them how to time travel; 2) It is indeed a Celtic imitation and the Celts, knowing that I would own this coin someday, added a bogus inscription just to mess with my head; 3) I have misidentified this coin and it's something else entirely; 4) The "inscription" is actually an artifact from a combination of corrosion, die weirdness, and an overactive imagination on my part. Post any wild conspiracy theories that you might have about this or any other coins in your collection.