Did you know the large and small dates were different master hub states? The large large Dates were examples of a master hub that was spreading, and the small date master hub was a freshly created MH. I wondered about this and took the same image of a small date and using Photoshop to enhance the design, The devices formed exactly the same:
This is the normal small date: Here is the edited version:
The swelling outwards enlarges the bust and the location of the devices move towards the rim. Even notice the '2' alters during this progress.