Ancient Rome? 2 coins. Need help

Hi,
Please help to identify these coins.
Certainly interestingly - they cost something?

Regards, Victor

I think the name on the obverse of the second coin is IVSTINIANVS, so, Byzantine (or "late late Roman") emperor Justinian.

Given what is left of the legend on the first coin, I suggest the same emperor, also because it is very similar in style.

This is just a tentative reading as I don't know much about that period, but here is a link to the Wildwinds page for Justinian. Good luck!