Rome Coin Identification Request [solved]

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The coin isn't in good shape, but I'm posting this question just in case. It's likely in the 300s, and it's 12mm in diameter. The next photo I posted looked a bit similar, so I brought it.

You're right about it being 4th century and the reverse is GLORIA EXERCITVS however I doubt it's a barbarian imitation like the one you posted. Without being able to read the obverse text I doubt it's possible to determine which exact emperor it is since multiple 4th century emperors used this reverse. I'm sorry but I thing the coin is too far gone to be able to correctly identify.

Thank you for your detailed analysis of the coin. While it’s unfortunate that the wear makes it difficult to identify, I’m glad it’s confirmed to be a 4th-century coin.