Late Roman Bronze Coins

Picked up these two coin recently out of a collection a local dealer was selling off very cheaply, picked these with the best patina for my growing collection. Could you help please?

The one on the left is Theodosius I with a SALVS REIPVBLICAE reverse, but I can't make out the mintmark. The one on the right is a posthumous coin of Constantine I, the reverse is Constantine, veiled in quadriga; the hand of God reaches down to him; and I can't make out the mintmark on this one either.