Here are a couple of pictures from a 2414H pair I got from ebay.
It is used in some new models like the AC16, and also replaces the 2408H in some models (for example in the PRX535, since 23/06/2008)
Is is quite, small, even when compared to a 2407H as you can see on the photo.
The 2414H-1 use in the new eon serie is said to be even smaller, and according to Zilch "has the tiniest neo magnet I have ever seen in a driver".