'The Bell' (Die Glocke) miniature is based on the writings about this Sci Fi like anti gravity weapon from the WWII era.
You can read more about it on Wikipedia http://en.wikipedia.org/wiki/Die_Glocke.
The model has a round grill plate that must be removed from the sprue and placed in the hole on the underside of the Bell.
This model is also available on Shapeways in 1:144 scale and 1:100 scale (suitable for Flames of War).
You can also see some of The Bell's painted on my blog at yeomanmodels.com