Hello. The 2 obverses of these two coins read Constantinopoli. The reverses seem a little bit different. Any idea might help. Thanks friends.. Charles
Looks like standard Constaninopolis reverses to me. These are a little lower style than average maybe, but doesn't look barbaric to me.
Each mint then active made a version of the type to commemorate the founding of Constantinople. Your second has a Constantinople mintmark for the 7th workshop. The first is off center losing the mintmark. Some mints used CONSTANTINOPOLIS while others, like yours, omitted the S. Each mint has a bit different style. You might ID your off center one by comparing the style to marked coins but all these are common enough that they tend to sell for about the same price depending on condition. Samples: Siscia, Nicomedia, Cyzicus, Antioch, Alexandria