Please Help Me ID My First Ancient

Unfortunately, I can't make out what the letters are; But from the little amount I can see, I'm thinking this coin is depicting one of the Constantius as Caesar. Not sure which one. Also forgot to add; if possible, can you tell me the condition, and the estimated value of this coin?

You have a Constantius II, Gloria Exercitus type. He is depicted as augustus (inscription ends with P F AVG). Possibly minted in Trier (inscription at bottom of reverse may begin with TR, which is consistent with Trier). There are several subtypes, cannot say more specifically. Here is one possibility: https://numismatics.org/ocre/id/ric....108?lang=en

With the coin too worn to make a definite attribution, it is not worth too much, a couple of dollars perhaps.