Ancient?? Any help?

This came in a collection I purchased and I can't seem to figure out what it is. Appears copper, maybe?
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This came in a collection I purchased and I can't seem to figure out what it is. Appears copper, maybe?
Comments
It is indeed ancient. Specifically, a Late Roman Bronze of emperor Constantine II. Reverse GLORIA EXERCITVS (Glory of the Army), two soldiers with spears, legionary banner between. Mintmark illegible. Here's a similar coin in better condition, from the Antioch mint: https://www.vcoins.com/en/stores/romae_aeternae_numismatics/136/product/constantine_ii_ae15_gloria_exercitvs_soldiers_one_standard_antioch_ric_40_ef/1001355/Default.aspx
Roman emperor Marcus Aurelius, "Meditations"
Apparently I have been awarded the DPOTD twice.
Thank you so much for your help!