Kyrenaika/ Kyrene AV Obol ND (308-05BC) 7mm 0.69g. EF Struck under Magas/ Ptolemaic Satrap 308-277BC obv: Horned/ Laureate Head of Ammon Zeus R rev: Vertical Thunderbolt between two eight rayed stars SNG Copenhagen 1233 BMC 217 Kyrene Mint I missed getting if from Triton XXIV/ sold for $1900+ 20 % fees VF+ Adams ex: sold for $2500+ 20 & Triton XVIII VF+
Nice coin! This may interest you: The best reference for Kyrenaika AV coins is Naville L Les monnaies d'or de la Cyrénaïque de 450 à 250 avant J.-C. Geneva 1951. Hard to find but I have a copy. The bad news is your coin is not the BMC 217 (Naville 191) dies. The good news is that I think it IS Naville 216 Here is a picture (sorry for the iPhone photo) and the obverse and rotated reverse from a previous auction Naville lists 39 different die combinations (17 obverse dies) for the type. I scan for the obverse horn shape, beard and hair pattern combined with the relation of the star rays with the central thunderbolt. It appears to be an exact match. In addition, the centering and edge bumps (more clear on original plate) match. So, Naville 216 was from Lucien Naville's personal collection. Weight is listed as 0.70 gms, but close enough. What do others think? The great news for you is that I did not make this connection in time for the auction. Congratulations!