Coin 3 is Theodosius II, coin 1 is a greek coin (or roman provincial) showing a thunderbolt and what I suspect is a lion...
Coin 2 needs special attention. It appears to be CONCORDIA AVG (Empress seated, head left) which was only issued by Gallia Placidia, Pulcheria and Eudocia, 155, 156 and 149 rarest issuers respectively. The obverse legend doesn't support any of them, but the hair is female - probably a more common empress of the period (although all of them are rare). I suggest you send that picture to the British Museum - they'llgive you a proper ID.
Coin 2 needs special attention. It appears to be CONCORDIA AVG (Empress seated, head left) which was only issued by Gallia Placidia, Pulcheria and Eudocia, 155, 156 and 149 rarest issuers respectively. The obverse legend doesn't support any of them, but the hair is female - probably a more common empress of the period (although all of them are rare). I suggest you send that picture to the British Museum - they'llgive you a proper ID.

























