I have had these sitting to 1 side while I deal with my LRB's and now I have a little time free I would like to find out who they are.

coin 1 = 14.87g


Coin 2 = 24.15g


Due to my concentrating on the 4th & 5th century I have not yet familiarised myself with the portraits of the early emperors so any help is appreciated.
TIA