Marco,
Welcome to Treasure Net ! !
Yes, you found a great coin. Divus Vespasian Denarius. 80-81 AD. DIVVS AVGVSTVS VESPASIANVS, laureate head right / EX-SC, Victory standing left, holding shield on palm; seated captive. RSC 144
Marco,
After looking at your old website, it's easy to see that you have found many fascinating objects. You may wish to post some of them just to give an example of what you are finding. You may also wish to post pics of items that have yet to be identified.
Again, Welcome to Treasure Net !!
Don.....