One of these days the lost will come back around, Kinda sucks I used to be amazed at the quickness you got atleast Help.
The left one is most likely from the reign of Contantius II. - the mintmark is gone but something like this one: http://www.wildwinds.com/coins/ric/constantius_II/_antioch_RIC_viii_113.jpg The second one is indeed a coin from antioch but sadly the last letter of the mintmark ist gone. Possibilities seems to be Γ, Δ and B. The emperor is most likely Honorius http://www.wildwinds.com/coins/ric/honorius/RIC_0072.jpg