Peter, it's the angle of the shot - the strings pass through the back of the bridge in a conventional way then go through a hole in the back of the saddle to rest on the groove. Nothing anchored.
You can just see it at the E string as it passes beneath the intonation screw.
This is a massive piece and quite heavy. If brass was good then a lot was better!!!
Will
(Message edited by bassilisk on April 20, 2011)