
A few ancient looking coins- want to verify and find possible worth

Hello, I have inherited these coins from a family member. They look like Ancient Greek or Roman. Wanted to see if anyone's opinions on what they are and any potential worth.
They were found in the 1990s the Gulf of Mexico at the bottom of an old shrimp boat.
Thanks!
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Hi Jennifer --
To look up your coins in databases or catalogs, you need to have a good idea about what the inscriptions say. I cannot read any inscriptions on your coins from your photographs.
Coins from ancient Greece have (no surprise) Greek letters in the inscriptions. Coins from ancient Rome have Latin letters (our standard letters today) in the inscriptions.
If you can make out the inscriptions, please tell us what they say.
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Thank you, Monika, for your eagle-eyed identification of Jennifer's coins. I am impressed with your prowess.
Here is a picture of a well preserved Severus II follis. It is going up for auction with an estimated value of $250 US dollars. The coin is so beautiful, it will probably sell for much more than $250.
Jennifer -- Your coin is in far worse condition than the one I've pictured. Therefore it's value will be low.