Ancient Confusion ID

Newish to Ancients and I am currently attempting to attribute and identify this piece. Appears to be like most Billon Tetradrachms of Alexandria I have handled. One lead pointed me in the direction of Ptolemaic Kings of Egpyt but my search in that direction hasn't shed any light for me.
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It is indeed Roman Egypt, a 3rd century AD billon tetradrachm. Unfortunately, the obverse legend is completely gone, so you'll need to try to match portraits. A lot of the 3rd century emperors issued coins like this, with an eagle on the reverse. The only other clue is the date on the reverse: "Year 2"; therefore it needs to be an emperor that reigned for at least 2 years. Which also doesn't help all that much, though it does rule out it being one of the scarcer brief-reign emperors.
Roman emperor Marcus Aurelius, "Meditations"
Apparently I have been awarded one DPOTD.