I originally posted this as a reply to Valentinian's call for comments on his new page of unique reverses but immediately realized that I had hijacked his thread when the first comment was on my coin and did not offer an opinion on the OP question. Therefore, I'm moving it here with apologies. So far I have posted 7 of my recent 8 auction winnings. It happens that the one left fits the unique reverse theme since it was, and could only have been issued by one ruler. It is not acceptable to run a list of rulers with eagle reverses but to state why this eagle is different from all others making it unique.
Carus at Roman Alexandria. His apotheosis--his raising to godlike stature = CONSECRATIO in Roman imperial coins.
The clues here are the reverse legend AphIEPWCIC (Greek for Consecratio) and the lack of a year date on the reverse. Carus was the only ruler consecrated during the time of the bronze Alexandrian tetradrachms. The obverse also favors those who read Greek thEW(=Divo) KAPW CEB or to the divine Carus Augustus. Of the 8 coins from the sale, it was the cheapest and probably my favorite. They are not rare.
Did you notice that the link you gave shows my coin - not a similar one but the exact specimen? I was suspicious but can find nothing I can not explain away by photo variations. My coin weighs 6.49g exactly as listed but I did not pay nearly as much as that link says it sold for 13 months ago. Not long ago I asked if anyone else noticed lower prices. Here is another. I have to wonder how many people owned this coin between the Pegasi sale listed at $95 and how it journeyed to the $61 I paid.
I thought it might be the same coin but I was reluctant to say. Good price too. You seem to be finding some excellent deals here of late.
