For all collectors od Roman antics coins there is a paradise Palazzo Massimo in Roma and I was there in January. The Museum's numismatic collection is the largest in Italy with all Roman coins you can dream on display as you enter a giant safe box. Far better that a coin cabinet, all technics it coinage are also described in a very didactic way. It is not only about Roman coins but all Italian coins from antics to Euros modern coins are on display with all explanation. Mainly you will see the world famous Gnecchi and King Emmanele III of Savoie collections. I do very bad photos as the light is specific to preserve the coins.
By the way, that museum is within a few hundred yards of the entrance to the main train station. If you fly to Rome and take the train into the city, you can walk there in five minutes!
An you can buy at airport a museum pass for 3 days including tubes station so you can go to main museum free of charges or pay less. Cost if I remenber 78 usd per 2 person if you go with your wife.
Exciting trip, beautifull exihibits Thanks for sharing them, really nice. I would love to go, but spent all my $$$$ on coins