The original one I have is 'reversed' from the one at http://www.flickr.com/photos/rnrobert/2561205319/

The arrangement is similar to the http://www.flickr.com/photos/gregandbryan/2612270714/

But the top rim area near where the neck attaches on the second pic, is open on mine - it's possibly a 'male version' rather that a fully closed rim around the top... :-)