A Roman brick tower?

[thebabbster]

Hello all! I am new to collecting (and cleaning) Roman coins. I seem to have gotten a couple with depictions of what looks like some kind of brick towers on them. I am looking for a general direction to go in to help identifying them, as well as another one with two people holding a winged statue on the back. It has the letters "CO_ICOP(R?)O..." and the rest I have not determined yet.
Since I am new to this I would be grateful for any help while I continue to search the catalogue.
Thanks and best regards!

(p.s. also anytips and ideas for cleaning them would be great!)