Don't listen to me because I'm probably wrong since I know nothing about ancient coins but it is so perfect it might not be legit... IMHO
..idk...what's it weigh...i'm kinda in the school with my co-coiners above..and Herodotus seems to have inside info on it already....
Here are a couple of other examples of this seller's offerings: DIOCLETIAN FOLLIS TRAJAN DENARIUS Unless buying poor copies of ancient coins is 'one's thing', I would advise avoiding this seller's offerings
However the pitting and scattered green deposits on the Vespasian dupondius look very convincing to me. From the photos I see no reason to doubt the coin.
The Trajan denarius looks real to me too. Correct style, typical weak reverse due to worn die, flow lines, black areas which weren't cleaned etc.