The coin with the letter "C" on it REALLY reminds me of the letter C you see in Civil War type of emblems (Confederate). Since we know it is not a real US mint type coin, may be a good idea to crop the picture of that one and post it in the TOKEN section as well as the CIVIL WAR section of Treasurenet.
The three silver coins you have there seem like they could be "cobs" (spanish silver). May be a good idea to post that in the COBS section of treasurenet. There are some fantastic people there than can give you some more detail on those.
As for the coin in the upper left of your picture (largest diameter and has what looks like a shield on it), I am truly lost. Everytime I look at it, I think "sheild nickel".. but the sheild is way too small!
I found the same civil war token last year.iIts the one on the bottom right of your pic.I could never fully figure out what was written on the coin.Thanks ! What does the otherside of it read if you dont mind me asking?