Certainly the Vatican archives have something they can kick in.
And how about giving the Temple stuff depicted on the Arch Of Titus back to the Jews.
That was looted by Titus, a pagan Roman Emperor. Is any of it still somewhere in Rome? If it is, it would be truly astonishing, given the corruption of Emperors and Popes, and the many times Rome has been looted over the last 1900 years.
Gold and silver objects were the first things looted, and usually melted down. Even bronze didn't escape. That's why we have few bronze statues from ancient times, whereas we have a lot of marble ones.
Please, not this nonsense again.
Like any of that stuff has been anywhere in Rome for any of the past 1500 years.