The Frome hoard of 52000 Roman was kept intact, though I suspect there will be displays carved out of the total holding. The recent Buckingham find too. Sometimes they are kept in one place, sometimes they are shared around. The only consistent thing is that they are/will be kept away from the public and collectors. A lot of museums don't have anyone to look after the coins, they just fester in a shoebox or three. Blackburn museum is a good case. The Hart bequest in 1945 gave them some really choice and/or rare coins including Montagu's Petition Crown, but the collection languishes. In fact there isn't even a sylloge of it to put down on paper what is present in the collection. The idea that they are kept for the nation is a little disingenuous as there isn't sufficient spare manpower within the various museums to provide an overseer if a member of the public wants to have a look. There isn't even sufficient numbers to answer emails. When I wrote the article on the Weyl patterns, only the BM responded to an enquiry regarding any examples in their possession. Don't expect any answers unless you use Freedon of Information.