I recently visited the Smithsonian at Washington DC, specifically the Museum of American History. As you might know, the collection of Russian coins once owned by Grand Duke Georgii Mimkhailovich Romanov "lives" there.
Coins were not on public view at the museum for a long time, but finally some coins went back on display and the exhibit was open to public yesterday.
I have a few blurry pictures showing the layout and the feel. Hopefully Alex can help me in posting them here.
Better pictures will be available in the near future.