Probably better to have put this into "What's It Worth" or "Ancient Coins". My guess is Roman bronze. Can't see much detail, need more light.
Can you post the weight in grams and the size in mm please. Could you also post a side view of the coin. Not saying the coin is genuine, but look at this link https://www.acsearch.info/search.ht...s=1¤cy=usd&thesaurus=1&order=0&company=
This is in fact (if authentic), an extremely rare and valuable AE medallion of Maximian. It is so rare, that the safest thing to assume is that you have a forgery, or copy, although there is an outside chance it's real. There's nothing else to be said until we have the weight in grams, the diameter in millimeters, and much, much better, high-resolution images that include the edge of the coin.
I cannot tell authenticity from the image, but the coin is: Maximianus Herculius - as Augustus 286-305. AE-Medaillon , Roma 297-298 REV: VIRTVS MAXIMIANI AVG,
welcome Angela ... oh, and good luck with your cool example (I sure hope that it's real => it's awesome)
I'm not into ancient coins, but it may help the others if you could tells us how you obtained the coin. Dave
Welcome @Angela Gosselin !!!! I hope it's genuine as well. I love the look of it---it's not one I recall seeing before. It would be so cool if that 'rare' medallion of Maximian is actually genuine.....
If you are near Baltimore (in Chesapeake Bay region so it is likely), you should go to the huge coin show at the Convention Center this weekend (Thursday through Saturday) and show the coin to a few dealers in the Ancients section. They will tell you if it is fake and want to buy it if it is not. If you are going to do this, PM me for some names to trust. I agree with JA above that the likelihood of finding one of these as you describe is very close to zero but you have a real chance of finding out if you can go since there will be several people there who know enough and would be willing to help.
You said you found it after a flood, could it be possible that the coin somehow made it to your property from a local museum, or store due to the flood?